空气污染英语作文60词汇集20篇

Dear Editor：

I am writing this letter to draw your attention to the deteriorating situation of “white pollution” in some regions despite the implementation of restrictions on the use of plastic bags.

In order to put an effective stop to the wide spread of “white pollution”， I would like to make the following suggestions . Firstly， the price of plastic bags should be further raised; Secondly ， special government departments should be established to supervise the making and using of plastic bags to ensure they are used when really needed.

I hope my suggestions would be of help and thank you for your attention.

In general, there are two way of traveling, private cars and public transportation.

Chinese people should regard public transportation as their first traveling opinion.

First, there are so many people living in this countries that make it so crowded.

If each chinese people own a car, there will be far more traffic jams and accidents, which increase you impatience.

Moreover, there will be far more pollution resulted from cars. Once a car started, it release huge amount of dirty gas and heat, which lead to great pollution and result in green house effect.

北京空气重度污染高达五级

雾霾是近几年来比较常见的空气环境污染现象，它的出现也让人们加大了对空气质量的检测和改善工作的展开。

根据预测，本轮的重污染天气过程从2号开始一直持续到4号夜间，其中，今明两天空气最差，预计将达五级重度污染。2号，北京市发布了空气重污染橙色预警以来，北京市各相关部门分别落实应急措施，并加大了对污染源排放执法检查和应急减排措施督查力度。

为确保应急措施落实到位，环保部门加大对固定污染源、移动污染源排放执法力度，截至目前，共出动执法人员1030余人次，检查施工工地、企业排放等点位1100多个;在一些水泥搅拌站记者看到，相关企业已停工停产，水泥搅拌车成排停放在厂区内并都贴上了封条，同时，按照应急预案的要求，4S店里的喷涂车间也停止了使用。

此外，通过路检、遥测、入户和进京口检测，共检查机动车3.77万辆次，处罚尾气超标车辆50辆，劝返外埠进京超标车88辆。

与此同时，北京市住建部门还开展了应急措施落实专项检查，截至目前，共检查工程942项，其中违规工地101项;城市管理部门已出动清扫保洁作业人员27123人次，作业车辆3689车次，检查人员1026人次，对重点道路加大清扫保洁强度，减少道路扬尘污染。

从目前的整体情况来看，针对本轮空气重污染橙色预警，北京市各区、各相关部门应对响应及时，整体情况良好，但仍存在个别露天焚烧等违规情况，已交相关部门处理。

语文迷网站提醒您：雾霾的组成十分复杂，大小有数百种颗粒物，这些颗粒物通过人体呼吸，进入呼吸道，会引发气管炎、哮喘等呼吸道疾病。特别要提醒有相关疾病的人群，要注意多加防范，减少外出。

cars have created a lot of serious problems in our world. all the time, they are pumping huge amounts of waste gases into the atmosphere, causing disease and even death.

one possible solution is to design and develop clean cars and clean fuels. but it may take decades for the new models to completely replace the traditional ones.

another solution is to develop modern public transportation systems and restrict the use of private cars. if the price of petrol rises constantly and the public vehicles are efficient and convenient enough, most people will not drive private cars. on the whole, the elimination of air pollution needs the co-efforts from the government and the public. this problem will be solved only with the help of science and technology.

In recent years, we can clearly feel the environment around us is more and moreobvious pollution, environmental safety problems have been very serious. Because of our previous policy is heavy economic development, light environmental protection,resulting in environmental pollution, ecological damage is very serious, mainly manifested in the following aspects:

近几年来，我们可以明显的感觉到我们身边的环境污染愈显明显，环境安全问题已十分严重。因为我国以往的政策方针是重经济发展，轻环境保护，所以造成环境污染、生态破坏十分严重，主要表现为以下几个方面：

In the atmosphere of security, since the middle of the twentieth Century, industry andthe rapid development of transportation, causing air pollution is increasing. Air pollutionis harmful to human health, but also affect the growth of plants and animals,destruction of building materials, serious when can alter the earths climate. According to the survey, China each year from air pollution and economic losses amounted to about 100000000000 yuan.

在大气安全方面，20世纪中叶以来，工业和交通运输迅速发展，造成了大气污染的日益加重。大气污染既危害人体健康，又影响动植物的生长，破坏建筑材料，严重时会改变地球的气候。据调查显示，我国每年因大气污染造成的经济损失高达1000多亿元。

In the water security, water pollution in China is very serious, widespread around thedrinking water safety problems, a direct threat to human and animal survival. In recent years, although the investment fund management a lot of Huaihe and other waters, but the effect is not obvious, the overall situation is still deteriorating.

在水安全方面，我国水污染问题十分严重，各地普遍存在着饮用水安全问题，直接威胁到人畜生存。近几年虽然投入大量的资金治理淮河等水域，但效果并不明显，整体情况仍在恶化。

In a biological safety, the invasion of alien species mass, a serious threat to thebiological diversity of china. In fact, the blind introduction of foreign species, damage the environment balance, serious and even lead to disastrous consequences. At the same time, because of the destruction of the ecological environment and wildlifehunting, biological extinction rate is rapidly increasing.

在生物安全方面，大规模的外来物种入侵，严重威胁了我国的生物多样性。事实证明，盲目引进外来物种，会破坏环境平衡，严重时甚至带来灾难性的后果。同时，由于生态环境的破坏和对野生动植物的滥捕滥猎，生物消亡的速度正在迅速增加。

In the security of land, the land desertification and soil erosion is very serious. In addition, the cultivated land quality in China decreased very rapidly, at the same time,because of the serious land pollution phenomenon caused by excessive use ofpesticides, is directly related to food safety problem of residents in our country. China is a developing country, in the face of environmental pollution pressure not only fromChina itself, and applied pressure from some developed countries abroad. Therefore the development of economy and environment is a need for us to issue long face, and it also need to rely on the participation of each and every one of us.

在土地安全方面，我国土地荒漠化和水土流失的情况已十分严重。另外，我国耕地质量下降非常迅速，同时由于过度使用农药等造成的严重的耕地污染现象，直接关系到我国居民的食品安全问题。 我国是一个发展中大国，面对环境污染方面的压力不仅来自国内本身，还有来自国外一些发达国家施加的压力。因此发展经济和治理环境是一个需要我们长久面对的问题，而这也需要靠我们每个人的共同参与。

Air pollution is one of the major problems of the modern world.

A great deal of energy is needed to run the factories of modern industrial nations. Automobile, trains, planes and busses need energy, too.

Nearly all of this energy is produced by burning fuels. The burning produces wastes, some of which remain in the air, causing air pollution.

Scientists are finding ways to stop air pollution especially in big industrial areas and densely-populated cities.

They are studying new ways of generating electricity that may be less damaging to the environment. In the meantime, many power plants are being modernized to give off less polluted material.

Also, engineers try to design and locate new power plants to do minimum damage to the environment.

However, it may be that we still have a long way to go before we have a "clean" world.

Nearly all of the countries are trying hard to prevent and control air pollution. There indeed seems to be no end to tasks that environmentalists will be required to do.

People will continually find new ways to control pollution.

Pollution around us

In recent years our life is becoming better and better. But our environment is becoming worse and worse. Its very bad for our life. Now many people have air-conditioners and cars, they produce (give off ) waste gas. More and more trees are being cut down. There are so much sand on the earth (leaving only sand ) . We often see factories pour waste into rivers or lakes. Water in the river is quite dirty. We havent enough clean water to drink in cities. Now we are in danger. Its very necessary and important to protect the environment well. I think if everyone tries his best to protect the environment, the world will become much more beautiful , and our life will be better and better .

我们周围的污染

近年来我们的生活越来越好。但是，我们的环境越来越糟。它对我们的生活很糟糕。现在很多人都有空调和汽车，他们生产的（出）废气。越来越多的树被砍伐。有那么多的沙子在地球（只留下沙）。我们经常看到工厂把废水倒入河流或湖泊。河里的水很脏。我们没有足够的干净的水的城市。现在我们有危险。这是非常必要和重要的保护好环境。我想，如果每个人都尽自己最大的努力去保护环境，世界将变得更加美丽，我们的生活会越来越好。

Industrial pollution is clearly one of the biggest contributors to our polluted landscapes, at least here in the west. There are plenty of causes of land pollution, from urban and industrial ones, to rural and agricultural sources.

But which kinds of land pollution are the most important? And what can we realistically do to help prevent more pollution?

This part of the site gives an overview of some of the most important causes of land pollution, including industrial pollution.

There are also some recommendations for helping avoid domestic land pollution incidents.

Click here for some good reading on industrial pollution and land pollution causes and solutions.

In recent years,we can clearlyfeelthe environment around usis more and moreobviouspollution,environmentalsafety problems have beenvery serious.Because of ourpreviouspolicy isheavy economic development,light environmental protection,resulting inenvironmental pollution,ecological damage is very serious,mainly manifested in the following aspects:

近几年来，我们可以明显的感觉到我们身边的环境污染愈显明显，环境安全问题已十分严重。因为我国以往的政策方针是重经济发展，轻环境保护，所以造成环境污染、生态破坏十分严重，主要表现为以下几个方面：

In the atmosphereof security,since the middle of the twentieth Century,industry andthe rapid development of transportation,causingairpollution is increasing.Air pollutionisharmful to human health,but alsoaffectthe growth of plants and animals,destruction ofbuilding materials,serious when canalter the earths climate.According to the survey,China each yearfrom air pollutionand economiclosses amounted to about 100000000000 yuan.

在大气安全方面，20世纪中叶以来，工业和交通运输迅速发展，造成了大气污染的日益加重。大气污染既危害人体健康，又影响动植物的生长，破坏建筑材料，严重时会改变地球的气候。据调查显示，我国每年因大气污染造成的经济损失高达1000多亿元。

In the water security,waterpollution in Chinais very serious,widespread around thedrinking watersafety problems,a direct threat tohuman and animalsurvival.In recent years,although theinvestmentfund managementa lot ofHuaiheand other waters,but the effect is not obvious,the overall situationis still deteriorating.

在水安全方面，我国水污染问题十分严重，各地普遍存在着饮用水安全问题，直接威胁到人畜生存。近几年虽然投入大量的资金治理淮河等水域，但效果并不明显，整体情况仍在恶化。

In a biologicalsafety,the invasion of alien speciesmass,a serious threat to thebiological diversity of china.In fact,the blind introduction of foreign species,damage the environmentbalance,serious and evenlead to disastrous consequences.At the same time,because ofthe destruction of the ecological environmentandwildlifehunting,biologicalextinctionrateis rapidly increasing.

在生物安全方面，大规模的外来物种入侵，严重威胁了我国的生物多样性。事实证明，盲目引进外来物种，会破坏环境平衡，严重时甚至带来灾难性的后果。同时，由于生态环境的破坏和对野生动植物的滥捕滥猎，生物消亡的速度正在迅速增加。

In the security of land,theland desertification and soil erosionis very serious.In addition,the cultivated landquality in Chinadecreased very rapidly,at the same time,because of the seriousland pollutionphenomenoncaused byexcessive use ofpesticides,is directly related tofood safety problemof residents in our country.China is adeveloping country,in the face ofenvironmental pollutionpressure not only fromChinaitself,andappliedpressurefromsome developed countries abroad.Therefore the development ofeconomy andenvironmentis a need for us toissuelongface,and it alsoneed to rely on theparticipationof each and every one of us.

在土地安全方面，我国土地荒漠化和水土流失的情况已十分严重。另外，我国耕地质量下降非常迅速，同时由于过度使用农药等造成的严重的耕地污染现象，直接关系到我国居民的食品安全问题。我国是一个发展中大国，面对环境污染方面的压力不仅来自国内本身，还有来自国外一些发达国家施加的压力。因此发展经济和治理环境是一个需要我们长久面对的问题，而这也需要靠我们每个人的共同参与。

一篇《天然气锅炉排烟是加剧京城灰霾天气的重要原因》的文章表示，天然气锅炉排烟是造成北京地区“丰富水汽”的主要来源，是加剧灰霾空气的“帮凶”，称北京发展天然气是双刃剑，既有清洁能源的一面，又有排放水汽的负面影响和氮氧化物的污染。

真相：中科院大气物理所研究员王自发表示，按照我国当前的天然气消耗量计算，每年燃烧天然气产生的气态水在3亿吨左右，假如全部转化成液态水(但实际上不可能全部转化为液态水)，平摊在全国人口集中的东部地区(估算面积约360万平方公里)，液态水的厚度连0.1毫米/年都不到，仅占大气中可降水量的几十万分之一，影响微乎其微。所以说，“煤改气”不会显著增加北京市大气中的湿度，不是北京地区“丰富水汽”主要来源。

南开大学冯银厂教授表示，无论是燃煤、燃气还是燃油，都会排放氮氧化物。“煤改气”是否会导致氮氧化物的升高，主要取决于改气之前煤炭的燃烧方式和煤炭品质、改气之后采取的燃烧技术等因素。如果采用了低氮燃烧技术，氮氧化物的排放量就会降低。我国脱硝比脱硫起步晚，近年来大气环境中的氮氧化物浓度下降并不像二氧化硫那么显著。氮氧化物浓度的增加可能会造成二次污染，但这是可控的。而且污染成因和机理非常复杂，不能因为氮氧化物浓度没有明显下降，颗粒物污染依然严重，就说是“煤改气”造成的，这是不科学的。

环境污染是当今世界上最大的问题。请根据提示，用自己的话说说怎样保护我们的水资源。

(1) 生命离不开水资源 (2) 饮用水在减少 (3) 水污染严重(4) 应该保护和再利用水

We cant live without water, but now the water was polluted. It is the biggest problem. It influences our daily life. So we should find a way to solve this problem. Water is important resources. In our daily life, we often leave the tap on after cleaning hands. Sometimes we often drop litter in the river. So the water was polluted by us. I think we could use a bottle of water two or three times. We have to turn off the tap after cleaning hands.

Lets try to form a good habit and save things around us. Lets do it from now on!

Water is very important to us. We cant live without water. But the drinking water is less and less. Because we waste a lot of water in our daily life. And some of us often throw rubbish into the rivers. So the rivers are polluted seriously.

Its our duty to save water, we must do something to save water. For example, we shouldnt pour waste water into the rivers and we should pick up litter around us.

If we dont save water, the last drop of water will be our tear.

Fish cant live without water. Plants cant live without water. People cant live without water, either. As you can see, the water is very important to us. But now drinking water is less and less. The water was polluted seriously.

So we would act quickly in order to save the water, But what must we do now? I think we can plant trees, clean the banks of the river, water the plants by using used water. Turn off the shower while we are washing hair. And we shouldnt drop litter into the river and so on.

Its our duty to try our best to protect and save water. And dont forget that if we dont save water, the last drop of water will be our tear.；

If we dont save water, the last drop of water will be our tear. What a frightful announcement!

Water is very important for people, animals and plants. Water is needed to many things in daily life, like taking a shower, drinking, washing clothes, making meals and so on. We cant live without water. But now water has become less and less because people waste water and pollute water. If we continue to do things like this, we shall destroy ourselves. So we should take action to improve the environment quickly. We shouldnt throw rubbish into the rivers. We should pay attention to environmental protection. We can use less water when we wash something. In a word, we should save water.

Take action quickly, there will be hope!

Water is very important. Without water, there can be no life on earth. People and animals need water. We need it to drink, to clean ourselves and to cook. What we need is fresh water, but most of the water on earth is sea water. The drinking water is becoming less and less because water was polluted by people. What should we do? I think we should save water. For example, when we brush our teeth, we should turf off the tap. We shouldnt pollute the fresh water. If we dont save water, the last drop of water will be our tear. If we continue to pollute water, we will live in a thirsty world.

Pollution is becoming more and more serious all over the world. The factory eject the dirty water, as a result , the water has becoming polluted and many fish species are dying out. We cant live without water. The earth is our only home and we should make it comfortable for ourselves. We should save water in our daily life. For instance, turn off the shower while you are washing your hair. We should recycle water. Dont let our tear become the last drop of water!

The most serious problem in the world is pollution. Water is the source of life. We cant live without water. But now some of the drinking water has become polluted and is diminishing. Something must be done to stop the pollution. Its our duty to save water. We should stop factories from pouring waste water into the river. We should plant trees in order to keep soil. If we dont save water, the last drop of water will be our tear.

The most important question in the world is pollution, but we know water, like air is very important to living things because all animals and plants need water. We, like fish cant live without water. We need it to drink, cook, and clean ourselves. We need clean fresh water, but we are polluting the lakes and rivers. Our drinking water is becoming less and less. If we continue to do things like this, we shall destroy ourselves.

I think we should follow the rules. Dont throw food away. We try to make a good habit. I know its our duty to save water. So we should save water and protect eh environment.

Now water pollution is the most serious problem. We cant live without water. Water is life. So I think we should do something go save and protect water.

One: turn off the shower while you are washing your hair.

Two: we can use the water that has washed vegetables to water plants

Three: When you see someone is wasting water, come over and stop him.

Four: Dont pour the rubbish into the river.

Though these are small things to protect water, I still thin theyre important.

We know our hometown Anji is very beautiful, it is famous for the bamboos. And our hometown is an ecological country town, Most persons of Shanghai like traveling here. They called Anji is Shanghai’s flower back garden; The start of Huangpu River.

But now, in order to attract more tourists, develop the industry of our hometown. The leader of Anji government announced an order: work hard for five years , make a new Anji. That means we will develop the industry . Maybe It will pollute the environment.

It is good to see that nowadays both the government and people are becoming more aware of environmental protection and ecological balance. What we need to do now is to put our words into our deeds. And this should start from every and each one of us ,and it should start from small instances.

Yes, the government has been doing a great job. And what about us? What should we ourselves do? Some of us may think that is quite difficult. But it can be as simple as: do not litter; and strictly observe the rules and regulations of the tourist areas. Use as few plastic bags and boxes as possible. When traveling, and whenever possible, use public transportation instead of always driving your own car.

It is not that far to reach, right? It is just as simple as the famous slogan for travelers in TianHuangping says, “Please take away nothing but your smile, and leave behind your but your footprint.” I believe that more and more people now are becoming aware of the importance of environment protection. Just imagine if you sit in the Large Bamboos Sea and taste the white tea of Anji, that is so wonderful and comfortable. So now let us turn our passion into action. Give ourselves a brighter future to head to. Leave our next generation a brighter, greener, and better world to stay in. If not us, who? If not now, when?

Thank you very much !

[旅游污染英语作文3篇

今天早上起床，我洗漱了一下，吃了饭，到了中午我去楼下玩。

一下午我看到我的朋友们在放鞭炮，我也闻到了浓浓的火药味，那味可真是呛啊！我们玩的周围都是火药味。尽管有那么呛，但还是有许多人下去玩，继续放鞭炮。我因为感到太呛，所以就跑上楼写作业去了。连续好几天都是那样，只有朋友叫我的时候我才下去玩一会。他们问我：“你这几天怎么不下去玩呢？”我说：“难道你们这几天在楼下玩都感觉不到很呛吗？我是因为你们这样放鞭炮把空气污染了，我感到很呛，所以不想下去。”

我想我如果少放一些鞭炮，空气就是会少一些污染了吧！

Health, surrounded by, smog, anything but, gases, impurities, absorb, poisonous, try hard, blacked out.

We all know that clean air is important to good health. Wherever you go and whatever you do, you are always surrounded by a sea of gases that we call air.

If there are impurities in the air, they may be absorbed by our bodies and make us ill.

We need clean air, but unfortunately, air pollution is globally present, especially in cities.

Many large cities are anything but pollution-free. Our cities have many factories, which we need to make food, clothing and other things.

Every year these factories pour millions upon millions of tons of smog into air.

Power plants and houses that burn coal add greatly to air pollution. Besides, there are more cars in cities now.

Once out on the streets, they will take in fresh air and replace it with poisonous gases.

Our country is trying hard to prevent and control air pollution. As long as every citizen also realizes its importance and makes join efforts, the day will come soon when people will take in only clean air.

Then, the sunlight will no longer be blackened out by smoke and soot.

我们生活的地球正遭受着严重的空气污染。工厂排放的废气、燃烧的垃圾、汽车的尾气等都是污染大气的祸源。它们时刻侵袭着我们的呼吸道和肺，使呼吸系统的发病率逐年上升。

The earth on which we live is to suffer from serious air pollution. The exhaust gas from the factory, the burning of waste, car exhaust and other pollution in the atmosphere are the source of trouble. The time of the invasion of the respiratory tract and lung, the incidence of respiratory rate increased year by year.

当空气轻微污染时，人体吸入的空气可以由鼻腔里的鼻毛除去部分灰尘，再由鼻腔里的黏液和各类支气管里的黏液将灰尘粘连住。气管和支气管内的纤毛有几千万根，它们每秒约摆动12次，像“清洁工”一样从下向上推扫呼吸道里的黏液，直至咽喉部，再通过咳嗽咳出体外。

When the air is polluted slightly, inhaled air can be part of the dust removal by nasal cavity in the nose, the nasal mucus in the bronchial mucus and the dust adhesion. Tracheal and bronchial cilia in tens of millions of their root, about 12 times per second to swing, like a "cleaner" from the bottom up sweep mucus in the respiratory tract, and throat, cough up through in vitro.

当空气严重污染时，呼吸道的净化作用将降低，甚至完全丧失。在这种情况下，呼吸道和肺易受病菌的侵袭而患各种疾病。

When the air is seriously polluted, the purification effect of respiratory tract will be reduced, and even lost completely. In this case, respiratory tract and lung is vulnerable to the invasion of bacteria and diseases.

由于种种原因，空气污染还在加剧。如果不能解决空气污染的问题，恐怕真有一天，人类只能带着口罩生活。

Due to various reasons, the air pollution is getting worse. If you can not solve the problem of air pollution, I am afraid it one day, humans can only live with a mask.

周六上午，我和爸爸妈妈一起骑车感受一下濮阳市的空气质量。虽然天气寒冷，但我也感觉不到冷，因为我要做一次小小的空气调查员。

一路上我们有说有笑，当走到黄河路西段时，一股难闻的气味扑鼻而来。我便问爸爸：“爸爸，这是什么气味呀，这么臭。”爸爸对我们说：“这里是我市的化工厂区，化工厂产生的废气气味。”

爸爸妈妈又带我来到马夹河边，看到河水的颜色发黑，并有一阵阵的恶臭，我问爸爸：这是为什么呢?爸爸给我讲：这是因为化工厂的污水和家庭的废水排向河流的缘故。

现在的空气污染太严重了，化工厂产生的废气，家庭的废水不经过处理直接排向空中和河流，汽车、摩托车等机动车数量迅速增加，尾气排放量加大。由此造成严重的空气污染。

为了缓解空气污染，请大家从身边的小事做起，不要乱扔垃圾，不要在野外烧火，尽量不要用尾气排放量高的汽车……相信有了大家的支持，空气污染造成的危害一定会消失!

导语：随着人们生活水平的提高，私家车数量不断增加。下面是yuwenmi小编为大家整理的优秀英语作文，欢迎阅读与借鉴，谢谢!

Private cars have become an important aspect of people‘s life in many parts of our country, especially in large cities such as Beijing, Shanghai and Guangzhou. While they bring much convenience to people, they are also widely criticized. There are some arguments for owning private cars. In the first place, cars allow people to move around freely, which greatly improves our living standard. We can easily drive cars for sightseeing on weekends. In the second place, cars are a comfortable way to travel, especially in bad weather. Last but not least, the car industry can boost economy by creating many job opportunities in production of steel, rubber, glass and so on. However, there are also many good arguments against cars. First of all, they pollute the environment by emitting harmful gases and giving out loud noises. In addition, cars cause a large number of traffic accidents, which bring great misery to the victims‘ families. As far as I am concerned, we should limit the number of private cars by providing better mass transportation and better service for the people. Everyone should sacrifice his or her own interest for the common good of the society.

【参考译文】

私家车已成为我国许多地区人民生活的一个重要方面，特别是在北京、上海和中国等大城市。虽然他们给人们带来很多方便，但他们也被广泛批评。有一些理由拥有私家车。首先，汽车可以让人们自由走动，这大大提高了我们的生活水平。周末我们可以很容易地开车观光。其次，汽车是一种舒适的旅行方式，尤其是在恶劣的天气里。最后但并非最不重要的是，汽车工业可以通过创造钢铁、橡胶、玻璃等的就业机会来提振经济。然而，也有许多好论据反对汽车。首先，他们通过排放有害气体和发出大声的噪音来污染环境。此外，汽车造成了大量的交通事故，给遇难者家属带来了极大的痛苦。就我而言，我们应该通过提供更好的大众运输和更好的服务来限制私家车的数量。为了社会的共同利益，每个人都应该牺牲自己的利益。

In my memory, though my hometown is a small village, it is very beautiful. When I was small, I liked to caught fish in the river, the water was so clean that I could see the fish. As I miss my hometown so much, last week, I went back to my hometown, I found the place in my memory was not like what it was. The trees were not that numerous, the roads became bigger, while there was less place for the river, I saw some dead fish in the river, the water was dirty, the river pollution was so serious! I couldn’t believe it, the beautiful hometown was destroyed by the pollution, it is people’s ambition results in it, they chase for the profit at the cost of polluting the environment. I wish people can pay attention to protect the environment, they are saving themselves, too.

在我的记忆中，虽然我的家乡是个小城镇，但是很美丽。当我还小的时候，我喜欢在河里抓鱼，河水是如此的干净以至于我能看到河里的鱼。由于抵挡不住对家乡的思念，上周，我回到了家乡，我发现我记忆中的城市再也不是它原来的样子了。树没以前的多，道路变得宽阔，然而河道却变得窄些了，我看到河中有一些死掉的鱼，河水是如此的脏，河流污染是如此的严重!我无法相信眼前的一切，美丽的家乡被污染给破坏了，人们的贪念导致了这个结果，他们为了追求利益，不惜以牺牲环境为代价。我希望人们能注意保护环境，这也是在保护他们自己。

Too many cars have caused a lot of serious problems in our world.

Besides congestion, accidents and fast fuel consumption, cars are responsible for a good part of air pollution in big cities.

One possible solution is to design and develop clean cars and clean fuels.

In Shanghai, some of the public buses begin to run on natural gas, which does not give off as much carbon dioxide as petrol.

Another solution is to develop modern public transportation systems and restrict the use of private cars.

If the price of petrol rises constantly and the public vehicles are efficient and convenient enough, most people will not buy private cars.

Thus, the total number of cars in big cities will reduce greatly.

On the whole, the elimination of air pollution needs the collective efforts from the government, the public and the environmentalists.

空气污染是空气中某些物质的含量超过正常含量时，形成危害动、植物，影响其生存的现象。大气中C0、NH3、SO2、H2S、Cl2、03和N02等物质的正常含量均在百万分之一以下，对动、植物没有明显的不良影响。但19世纪以来，由于工业和交通运输的发展，那些物质大量排入大气，使空气污染日趋严重，影响到动、植物生命活动乃至人体健康。

污染物的来源，有的来自自然界（如火山喷出的烟灰），有的来自人类活动，其中工业、交通运输产生的废气是主要的污染源。空气污染可分为气体污染物和气溶胶状污染物两大类。气体污染物包括SO2，、03，、氮的氧化物以及碳氢化合物等；气溶胶污染物包括固体粒子（粉尘、烟尘气）和液体粒子（烟雾、雾气）两类。直接向空气中排放的污染物质，叫一次污染物。空气与污染物之间相互作用，产生反应，或空气中光化学反应引起的污染物变质所产生的新污染物，叫二次染物。

空气污染物种类很多，其中对农业威胁较大的约有十多种，如SO2、 HF、C12和光化学烟雾等。 气象条件对空气污染物的影响，水平风速和对流层高度是影响大气稀释空气污染物能力的两个气象要素。当农田上空主导风向来自污染源时，农田容易受有害气体的危害；风力强弱则影响空气污染物的扩散速度、污染物在空气中的浓度与平均风速成反比；通常午后湍流强，空气处于不稳定状态时，有利于扩散。夜间晴朗无风，近地面逆温层可使污染物在地面上停滞积聚，加剧空气污染的程度。另外，在准静止的高气压系统中，由于下沉逆温阻止下层排放的污染物扩散到大气上层，可形成近几百米厚的污染层。各国多次发生的严重空气污染事件大都是在低逆温层、风速小和无雨的气象条件出现几天之后形成的。

空气中一些污染物例，如SO2和悬浮于空气中的农药颗粒等，经雨水淋溶落到地面，又可污染土壤和植株。污染物对植物的危害，一般是通过气孔进入植物组织，干扰酶的作用，阻碍代谢机能，有的有毒物质在体内还可进一步分解或参与合成过程，产生新的有害物质，侵害细胞组织，抑制光合作用，使生长受阻、产量降低、品质变劣。其危害分为急性、慢性和不可见危害等。高浓度污染物造成急性伤害，引起产量显著下降，低浓度污染物，在长时间作用下，造成慢性危害，一般症状不明显。不可见危害只造成生理上的障碍，一般没有症状。

植物受空气污染危害的程度，主要受下列因素影响：污染物浓度和植物接触它的时间；植物本身的构造和所处的发育期以及环境条件的影响。如充足的光照，适宜的温度、良好的供水和空气湿润，较高的C02浓度等，都能导致叶片气孔开放，易受污染危害。 植物对大气的净化功能。不少植物具有一种以酶作催化剂的潜在解毒力，能够分解一些有毒物质，或形成一些大分子络合物，暂时可以降低毒性。1公顷森林，每年可吸滞灰尘30多吨，1公顷柳杉林，每年可吸收700多公斤S02，柑桔树的叶子可吸收储存硫达1％，青杨和桑树具有较强的吸收铅尘的能力，加拿大杨、银杏、榆树、梧桐、桉树等都是较好的“天然吸尘器”。草坪的吸附粉尘能力比裸露地面大几十倍。因此环境科学的任务之一，是要充分发挥植物净化大气的作用。选择吸收污染能力强的植物，扩大造林绿化面积，根据污染源位置、污染物汇集区的地形地势、风向和污染气体的季节分配，统一考虑构成一种包围式或隔离式的林带，使含尘气流在移动中途被树林吸收。另方面要研究采取控制或减少排放污染物的措施，以保证大气质量符合规定的标准。

It is universally acknowledged that tour can make people feel happy; traveling is a good way to relax oneself. Tourist data shows that people in China made a great contribution to the world tourism, and it’s more and more popular for people to go out for vocation. Though reports criticized that tourism had brought harm to the environment, I still believe in the rising pace of tourism.

Well, there is no denying that at this moment, tourism has caused some problem to the environment, but what I want to emphasize is that such damage are raised by people, as long as we improve the environmental consciousness of our citizens, as well as perfect the public facilities, such as adding more dustbins to convenience tourists; building cafeterias to offer meals to them. I believe within a period of time, the situation can be relived.

Environment itself also has the ability to recover itself. Years ago, when there were no so many tourists, and no industrial pollution, trees grew well, flowers smelt good, sky was blue, water was clean. Why the nature seems so unnatural now? It must be our own problem, for we have took too much, but paid back too less. Think how we treat our land. It is really unfair.

Just as I mentioned before, tourism had brought great profit to our economic, whatever scenic spot it is, it must has the relationship with our land, our trees ,our water, etc., everything can’t separated from earth. So as you see, tourism won’t bring harm to the environment, but ourselves.

It is good for us to go out to feel different culture atmosphere, and to see different local conditions and customs, but remember, protect our nature resources.