英语作文：人类活动破坏了环境【合集20篇】

As the technology and economic is developing, the environment problem is becoming a severe problem, and the people are seriously affected.

随着科技和经济的发展，环境问题变得严峻，人们也受到严重的影响。

The sustained damage to the environment has caused a serious problem, such as air pollution, sand storm, extraordinary weather, and diseases etc., people suffer from what they have done to the environment.

对环境的持续破坏已经导致了一系列问题，例如大气污染，沙尘暴，反常气候还有疾病等等，人们对环境的破坏让他们尝到苦果。

However. People have realized that it will be too late if they don’t do anything to prevent things from getting worse. For example, there is an “Earth Hour” on a Saturday of March of each year. It is a global movement, usually it lasts from 8:30pm to 9:30pm. It is also called “Light-off for One Hour”. During this hour, all the light will be turned off. The purpose of this movement is not only to save energy, but also to warn the people to realize the importance of protecting the mother earth, and to stop violating the environment.

然而，人们已经意识到，如果他们不做些事情来防止情况继续变糟的话，就太晚了。例如，每年三月的一个周六，有一个“地球一小时”，这是一个全球性的运动，通常从晚上8:30持续到晚上9:30。也叫做“熄灯一小时”。在这一小时里，所有的灯将会被关掉。这个运动的目的不仅仅是节约能源，还警示人们意识到保护地球母亲的重要性，停止对环境的破坏。

Anyway, people and the environment have to keep a balance relationship. People take from the environment, and have to protect it too.

无论如何，人与环境必须要保持一种平衡关系。人从环境索取，也要保护它。

Sunday, my mother and I go to buy vegetables. I went to the vegetable market on the edge of the river, on the surface of the river is in a plastic bag, selling vegetables in plastic bags, people are using plastic bags, I remember the teacher said: a plastic bag to one square metre of land always useless, but for twenty years.

For our children, for our beautiful home, Ill initiative to use less plastic bags, shopping with a basket to let everyone keep up a potted flower. Love our earth, the love of beauty a pieces of foam grass dont use disposable chopsticks and lunch boxes. Stay away from the white pollution.

This HuanBaoRi let us love home, love the earth, away from pollution. Not contaminated.

I hope that every day is HuanBaoRi!

星期天，我和妈妈去买菜。我来到了菜市场边上的小河一看，小河的水面上都是塑料袋，卖菜的人在用塑料袋，人们也在用塑料袋，我想起老师说的话：一个塑料袋会把一平方米的地永远没用，可是要二十年。

为了我们的子孙后代，为了我们的美好家园，由我来倡议大家少用塑料袋，买菜用菜篮子让大家养起一盆花。爱我们的地球，爱美一片草地不用一次性筷子和泡沫饭盒。远离白色污染。

这个环保日让我们爱家园，爱地球，离开污染。不用污染过的东西。

我希望天天都是环保日!

Our modern city is too crowded， and to solve the problem， three proposals are put forward. Most people believe that we should fist practise the policy “Late Marriage” and “One Couple， One Child” in order to reduce the birth rate. Secondly， the city government must have a tight control over rural people entering cities to engage themselves in trade or do various physical jobs so as to lessen the pressure on the city caused by the increased population. Finally more and more people suggest that living blocks with shopping centers， schools， hospitals as well as cinemas and theatres round them or even satellite towns should be built in city suburbs or the countryside round the cities. In this way city citizens will be encouraged to move there to live and work. If these three proposals are well carried out， the city population will be greatly reduced.

我们现代城市太拥挤了，要解决这个问题，提出了三点建议。大多数人认为我们应该在政策上“迟婚”和“一对一”，以降低出生率。其次，城市政府必须严格控制农村人口进入城市，从事贸易或从事各种体力劳动，减少人口增长造成的压力。最后，越来越多的人建议，居住在购物中心、学校、医院、电影院、剧院等生活街区，城市郊区或郊区的城市应该建在城市郊区或城市周边的城市。在这个方式中，城市居民将被鼓励在那里生活和工作。如果这三项建议都很好地实施，城市人口将大大减少。

[保护环境英语作文如何减少城市污染

今天我来到了我爸爸上班的地方张集。张集是一个小镇，它是我的老家 。

Today I went to my father work place Zhang ji. A set is a small town, it is my hometown.

小时候我在那里住的时候，环境特别的不好。人们根本不保护环境。垃圾四处‘‘流浪’’，屋前屋后、路旁岸边都是垃圾的家。夏天苍蝇蚊子大聚会，散发出浓烈的腐臭味，人们过路时得捂着鼻子才行。冬天寒风吹来，纸片、树叶、塑料袋漫天飞舞，真像‘‘天女散花’’，人们不戴口罩眼镜还真不敢出门呢。

When I was a child living there, especially bad environment. People dont protect environment. Garbage everywhere wandering , house, roadside banks are rubbish home. Summer flies mosquitoes big party, stink smell strong, people crossing the road when a clutching his nose it. The winter wind blowing, leaves, paper, plastic bags flying all over the sky, like The heavenly maids scatter blossoms. , people dont wear masks glasses really dare not go out.

如今沙漠正在急剧扩大，人们也已经知道了保护环境的重要性。瞧，现在张集就像一个大森林，街道上干干净净，没有一点灰尘。绿树成荫，鲜花盛开，空气清新，天空湛蓝。

Now the desert is expanding rapidly, people already know the importance of Protect environment. Look, now a set like a forest, the streets clean, no dust. Trees, flowers in full bloom, the air is fresh, the sky is blue.

你看，如今我们在这么好的环境下生活，多么幸福啊，我们要把保护环境进行到底，让老家永远那么美丽。

You see, in such a good environment we live now, how happy ah, we want to Protect environment through to the end, let the home is always beautiful.

人类在变好，环境也在变好，让我们的环境一直好下去吧。

The human is changing, environment is also good, let our environment have been down.

Because colleagues because you have a good sense of crisis, this time dont want to hurt, to continue to do your job, leadership will understand everything, also wont become a good leader. Meet with your colleagues have comparable work harder when well done, let the facts speak. More dont care if its just to the unit, the leader will deliberately to observe the test you, work, and a long lead time and most of the colleagues will understand, your credibility is high, leading more appreciated and generous person.

All should make the first move, even if the start point of cold and setbacks are normal, as long as have the ability to work, is not cheap, so in a normal environment will soon be able to fit in. Come on!

Write a passage with the words and phrases given：the problem of pollution， cause， artificial substances， release， waste products， industrial production， consumption of goods， bring it under control， agriculture， chemical substancea. Environmental Pollution I read a piece of news recently. It says that in Japan marly businessmen ave selling fresh air to customers.and now it is becoming more and more popular. Why？ ——Fresh air is getting less and less in Japan， and so is it in the U. S. A. In fact， environmental pollution is a very serious problem the whole world is facing. it is mainly caused by the waste products released from artificial substances， industrial production and increased consumption of goods. Bedsides， the use of chemical substances in agriculture also causes environmental pollution. Look at the sky， you can see that dense smoke is being released from the high and big chimneys；

those dirty and poisonous substances are flowing into the rivers that we use for drinking water and millions of tons f waste products are heaping around us. How to change this condition？ More and more countries are trying to work out some effective means to bring it under control， but no great success has been made.

This summer vacation, I joined a social practice to be a part-time tourguide. There I found something that impressed me a lot.

People who love traveling are always finding places to take a vacation, which caused a lot of troubles.For example, I found that some people were used to dropping out the trash everywhere. They just regarded the sightseeings as their houses, which cost a lot to clean it up. Besides, some one should write down their names on the trees and walls. People who wanted to leave their names whereever they went are always to punish in future.

Nevertheless, I also found some good examples, such as teaching tourists not to destroy the places of historic interests, helping clean up the environment,etc..I think we all need to teach more people not to hurt our precious nature. What we really need to do is protect them form destroying.

Xitang, a beautiful scenery, the scenery pleasant, pond water bottom, little fish in the water, the ducks on the water, and a variety of unknown elf dallied, men weeping willows graceful, flowers to outshine each other... But then xitang is changed.

Xitang, turned into a "dump". Pond floated on the surface of a lot of garbage bags, sometimes floating in the pumpkin. Below the surface are all black skin mud, and people have lost. How to make the town is not contaminated?

From now on, we have to clean the bottom of the pond sludge, dont let the pond water in xitang, well have some trash can, men and also made some billboards, told men store boss and passing pedestrians dont litter.

Let us act, to join protect xitang environment! I believe in the near future, xitang must be as beautiful as before.

以前的西塘，景色优美，风光宜人，塘水清澈见底，小鱼儿在水中漫步，野鸭们和各种不知名的小精灵在水上戏耍，塘边垂柳婀娜多姿，花儿争奇斗艳……可后来西塘却变了。

西塘变成了“垃圾场”。塘面上漂着许多垃圾袋，有时还漂着臭南瓜。水面下全都是黑黑的泥和人们丢的果皮。怎样才能让西塘不受污染呢?

从现在开始，我们要清理塘底的污泥，不让塘水流进西塘里，我们要塘边放一些垃圾桶，还要立一些告示牌，告诉塘边商店的老板和过往的行人不要乱丢垃圾了。

让我们行动起来，加入保护西塘的环境的行列中去吧!我相信不久的将来，西塘一定能像以前那样美的。

昨天，我看了这样一幅漫画。

据说在一个很远很远的一个小岛上，那里的树木茂盛，一年四季鸟语花香，土地肥沃;有一天了，来了20多个难民，男女老少都有。于是，他们便在这座小岛上安居乐业，每一天，男人们用肥沃的土地种庄家，妇女们则用自做的织布机织衣服和裤子，而孩子们却用水草和树的“胡须”作了一个网来捕鱼或虾。

有一天，来了一个富商，当他经过这座小岛时，被小岛的一棵棵摇钱树给迷住了，他登上了小岛，把小岛的居民都叫了出来，给他们每人都发了一把斧头，富商说：“村民们，我给你们每人一个发财的好机会，现在，一棵树100元，只要你们把砍得树交给我们，我们便把钱给你们，现在开始吧，只要你们愿意。”

话音刚落，村民们一窝蜂的跑进森林，树们看见了锋利的斧子，竟拔腿就跑，可他们怎也逃不出村民的手心啊，一年年一代代，森林的树渐渐被砍光了，就在这时森林之神从睡梦中醒来，它发现自己的孩子都被杀害了，一气之下，召唤出了三个恶魔，“海啸”、“龙卷风”、“雷雨”。

人们见了丢下斧头慌忙逃在。“海啸”了吞噬一半的土地，“雷雨”让人们变得更慌张，正当人们上船时“龙卷风”卷走了一切。人们绝望了，第二次，海啸上岸时，带走了一切包括那锋利的斧头。

是呀，如果没有贪婪这一条可恶的虫，人们会去伤害树木吗?不!不会，人们会去保护他，爱护她!

I believe the school environment protection are important because students need a quiet and pollution-free environment to study. What we need to do in order to maintain our clean and neat environment to our students? First, we will need to have giant garbage can around each corner. Second, we will need to have school policies regarding littering and spits on the ground, where students and teachers would be fine if they violated the school policies. Third, we also will need to have garbage cans in classrooms, school main entrance, back door, parking lots, basketball court, ect. Last, we will need to announce the school policies, so the students and teachers will need to follow. By doing all this, we can promise the clean and neat environment for our current and future students.

今年，我国发现了很多人砍伐树木，动物们都哭着离开了家乡。

有一天，有一个伐木人拿着一把锋利的斧头，动物们感到很害怕就躲了起来。伐木人拿着那把锋利的斧头用力的向无辜的树砍去，那树哭着说：“不要砍我不要砍我。”树们都伤心极了，有一个动物看见这残忍的手段就说：“这些人多么恶毒啊，我们不应该相信人类。”大家异口同声的说：“是啊，是啊。”

忽然有一个人冲了上去，他说：“不要再乱砍伐树木了，树对我们很重要，因为它们能为我们遮风挡雨啊。”伐木人说：“哼！为了我的工作我就要砍怎么着。”那个人又说：“你再不停止就叫警察了，你这样不停地砍伐树木，动物们怎么生活啊。”伐木人想了想低这头说：“是的我这样砍伐树木是不对的，我保证以后都不砍了。”

此时此刻，动物们都欢呼起来它们说：“好耶，我们可以回到我们的家园了。”这个故事告诉我一个道理：砍伐树木是不对的，况且对森林有害还对动物有害，我们不应该砍伐树木，我们要爱护大自然。

据说在一个很远很远的一个小岛上，那里的树木茂盛，一年四季鸟语花香，土地肥沃;有一天了，来了20多个难民，男女老少都有。于是，他们便在这座小岛上安居乐业，每一天，男人们用肥沃的土地种庄家，妇女们则用自做的织布机织衣服和裤子，而孩子们却用水草和树的“胡须”作了一个网来捕鱼或虾。

有一天，来了一个富商，当他经过这座小岛时，被小岛的一棵棵摇钱树给迷住了，他登上了小岛，把小岛的居民都叫了出来，给他们每人都发了一把斧头，富商说：“村民们，我给你们每人一个发财的好机会，现在，一棵树100元，只要你们把砍得树交给我们，我们便把钱给你们，现在开始吧，只要你们愿意。”

话音刚落，村民们一窝蜂的跑进森林，树们看见了锋利的斧子，竟拔腿就跑，可他们怎也逃不出村民的手心啊，一年年一代代，森林的树渐渐被砍光了，就在这时森林之神从睡梦中醒来，它发现自己的孩子都被杀害了，一气之下，召唤出了三个恶魔，“海啸”、“龙卷风”、“雷雨”。

人们见了丢下斧头慌忙逃在。“海啸”了吞噬一半的土地，“雷雨”让人们变得更慌张，正当人们上船时“龙卷风”卷走了一切。人们绝望了，第二次，海啸上岸时，带走了一切包括那锋利的斧头。

是呀，如果没有贪婪这一条可恶的虫，人们会去伤害树木吗?不!不会，人们会去保护他，爱护她!

Important to save water

Water is a kind of liquid. It has no taste or smell. It is transparent, too. Water is useful and is important to us. Why? For example, we use water to water the plants. We use water to wash our face or to have a bath. We drink water or we will die…Water is also very important for China. There are 2.8 hundred millions of steres of water in China, but everyone can only use 2300 steres. It is only twenty–five per sent in the world.

Not too long ago, there was a man called Jacques Cousteau. He loved the beautiful colors, and the beautiful fish in the sea. However, when he returned some years later, the colorful coral reefs were dead and grey because the factory near the sea poured waste water into the sea. Jacques Cousteau decided to tell people how important it was to save the environment under the sea. He started the“ Cousteau Society ” to help protect life in the sea. Now there are over 30000 members all over the world. Since water covers most of the earth, Cousteau knew that we should keep the sea clean. We should not litter the sea, and should clean up the dirty parts. As water is very important to our environment, he encouraged everyone to take part in protecting our lakes, rivers, sea and ocean.

There are still a few people who are not protecting the water now in the world. For example, some factories pour waste things into the rivers, lakes or into the sea near by. The water there has become very dirty and we can’t use them at all. Although there are seventy–five per sent of water in the world, we can only use fresh water, that there is only a little. So we should use little water when we need to use it. For example, I do not use too much water when I am washing my face or having a bath… It is important for us to keep the water clean. You may ask yourself, have I ever poured or thrown dirty things into the water? If your answer is “No”, that means you have already helped to protect the environment. It is our duty to protect the environment. You may ask yourself again, have I ever helped to clean up the water? If your answer is “Yes”, that means that you have already done something useful to improve the water. If we use up all the water, it is difficult for us to get it from anywhere, including the universe. It is terrible to think that people are too thirsty to live! I believe, that if everyone helps to protect the water, the water must be protected. You do not want to “kill” your son or your grandson, do you? So now let us to protect the water! Please don’t let the last drop of water on the earth is we human’s tear!

The trickle of water was crystal clear, accompanied by the sound of the "ding dong" of the spring. The undulating mountain stands erect, majestic and overwhelming; The green trees, towering above the tops of the mountains, are not afraid to be afraid; The wild flowers, which are in the top of the mountain, are full of beauty and beauty, and the fresh flowers are pleasing to the soul. But that was all have become memories, is facing a murky water, batteries, plastic bags have polluted the land, industrial waste gas, automobile exhaust pollution the air, trees and flowers are hard to meet again, only can see is just a weak looking trees flowers and plants, all everything has disappeared, the earth on a red alert. The presidents of all countries have been together for three days and three nights... "The whole people moved to the moon," they were consulted, and they issued such an order. According to the scientists observed earth damage is too severe, human will not far from the end of the world, if you dont leave the earth, mankind had to count the days such as dead. The present moon, which has been constructed by human ancestors and modern humans, has been transformed.

The lush woods, the crystal clear water, the blue sky, and the various shapes of flowers and animals. "Wow! This is like a new earth, and it brings us back to the old days." people dont sigh. Yes, the moon has now and once the earth is almost the same as the air around the moon, the moons gravity, and thick atmosphere around the moon, everything seemed to go back to the once upon a time, people are living down here... "Wow! There are so many trees here! ", "wow! There are so many rivers here!" Greed once again led the human hand into the abyss...

For a long time, the moon returned to the earth and the earth was devastated, and everything on the moon was dead. All the pollution to the moon, the atmosphere became thin almost close to zero, tragedy staged again, once upon a certain day a diameter of 40 kilometers meteorite broke into the moon, because the moons atmosphere is too thin, almost no resistance, is this meteorite is easy to break into the moon, because there is almost no resistance, meteorite impact force is very big, hit ground surface cracked a big hole, the hot, liquid mass of molten rock from cracks in shock... Facing death of that a moment, human beings finally wake up, but the wake up, now is just unable to struggle, ridiculous human this time really redeemed himself again. The world has been destroyed, mankind has perished.

我们人类生活在地球上，地球上有许多东西需要我们保护，但是我们却没有在意。

We live on the earth, the earth there are many things we need protection, but we didnt care.

有些人不珍惜地球赐予我们的一切，例如人们乱砍乱伐，大量使用一次性筷子和乱扔塑料袋，制造白色垃圾等已经给大自然带来了许多环境问题，严重影响了我们的生活。还有大气污染，酸雨和臭氧层等带来的危害都是大自然给人类带来的灾害，人们乱砍乱伐，乱扔塑料袋和使用一次性筷子等，这些就是人们不尊重大自然而造成的，没有自然，便没有人类。这是世界一大朴素的真理，人们只会一味的抢夺自然，征服自然，只会破坏生态系统，咎由自取，使人类濒于困境。切记，保护环境就等于保护我们自己生存的环境。

Some people do not cherish the earth gives us all, for example, people cut down many trees, the extensive use of disposable chopsticks and throw plastic bags, producing white garbage has to nature brought many environmental problems, a serious impact on our lives. There are air pollution, acid rain and the ozone layer damage caused is human nature to bring disaster, people cut down many trees, throw plastic bags and disposable chopsticks, which is that people do not respect the nature and cause, no nature, no human beings. This is a big world, plain truth, people just blindly grab the nature, conquer nature, will only bring trouble to oneself, the destruction of the ecological system, humans dilemma. Remember, Protect environment is to protect our own living environment.

我们要保护这个脆弱的的地球，不要让茂密的森林，辽阔的草原和无边无际的海洋成为我们的回忆。

We want to protect this fragile earth, dont let the dense forests, vast grasslands and boundless ocean has become our memories.

现在起，我们应该保护环境，一起捍卫我们的家园。

Now, we should Protect environment, to defend our homeland.

Where is my home?

Some fish are forced to leave polluted water and are flying in the sky. But unfortunately, air is also so polluted that they have to wear masks. Each of them is crying, “Where is my home?” What a terrible sight!

Mankind has brought so much pollution. Waste is being poured into rivers and seas. Poisons to kill pests in farming and chemicals go into rivers and seas, too. Poisonous gasses from factories also make the air so dirty. The whole balance of nature is being destroyed as a result of our ignorance of the environmental protection.

Personally, man can not live alone on the earth. Should fish die from serious pollution, so would man! It is high time we did something to prevent such a scene from happening.

【译文】

何处是我家?

一些鱼类被迫离开受污染的水，并在天上飞。但不幸的是，空气污染，也使他们不得不戴上口罩。他们每个人都在哭，“我的家在哪里?”这太可怕了!

人类带来了如此多的污染。废物被排入河流和海洋。毒药杀死农业害虫和化学品进入河流和海洋去，太。从工厂有毒气体也使空气这么脏。整个自然界的平衡被毁坏了我们对环保的无知造成的。

就个人而言，人不能独自生活在地球上。如果鱼死了严重的污染，将男人!现在是时候我们做了一些，以防止发生这样的场面。

“我们青海是三江源头之地，保护好这里是我们的责任，也是我们的义务。”5日，在西宁市中心广场举办的世界环境日宣传活动现场，志愿者们对记者说。

6月5日是世界环境日，青海省环境日主题为“保护好中华水塔，确保一江清水向东流”，该主题旨在动员各级政府、部门和社会各界牢记嘱托，履行责任，牢固树立人与自然和谐共生理念，践行绿色生活、绿色消费，推动绿色发展，引导广大民众积极关注和参与三江源国家公园建设和湟水流域污染治理，保护水环境、治理水污染、节约水资源，从身边小事做起，履行环保责任，筑牢生态安全屏障，共建美丽家园。

活动现场，记者看到，很多市民对三江源国家公园片以及湟水河治理专题片都有着浓厚的兴趣，在现场驻足观看，一些小学生、中学生志愿者也加入到宣传队伍中，用自己手中的画笔，在百米长卷上画出“我爱家乡水”，同时还将环保宣传语编成快板书，在广场上为市民表演;有些在广场铺起来百米签名长卷，呼吁市民从身边小事做起，履行环保责任。

据记者了解，从5月下旬开始，西宁市利用各类媒体在商场、酒店等的LED屏、手机短信，公交车内车载电视等平台播发今年“改善环境质量推动绿色发展”的世界环境日主题、环保公益广告片及环保宣传标语，旨在引导社会公众实施绿色低碳消费，使节水、节电、节能、节材、降低生活污染物排放成为广大群众的自觉行为，努力提高市民环境意识，营造人人关心环保、支持环保、参与环保的浓厚氛围，努力改善全民生活环境质量。

1·开头

冬爷爷走了，春姑娘悄悄地来到了人间。她吻了一下草地，草地苏醒了，她用手碰了一下柳树，柳树也苏醒了……

冬爷爷刚走，春姑娘就挎着百花蓝，迈着轻盈的脚步来到人间，顿时，万物复苏。

2·过程

在天空中，忽然，两个黑影飞过，一看就知道是燕子姐弟从南方飞回来了。燕子弟弟对姐姐说：“姐姐，我们什么时候才能到家呀?”燕子姐姐说：“我看这儿就是咱们的家。”燕子弟弟吃了一惊：“不会吧，咱们的家河水清澈见底，如同一条透明的蓝绸子，这儿的河水黑不溜秋的，还漂浮着垃圾，咱们家的草地碧绿碧绿的，这儿的草地枯黄枯黄的，怎么可能是咱们的家呢?”燕子姐姐对弟弟说：“也有道理，快走吧!”突然，从小河里探出一个小脑袋。燕子弟弟大喊：“西西，你怎么搬到这里来了?”原来，小鱼西西是燕子姐弟的邻居，是他们从小的伙伴。“我……我没有搬家呀，这儿就是……就是咱们三个的家。”燕子姐弟不敢相信自己的眼睛。另外，西西告诉燕子姐弟，说：“是人类一直建工厂，工厂里面排放的废水使其他小鱼喝了废水被毒死了，看来我也活不长了，你们快走吧!”说完就断了气。在半空中，掉下了两滴水珠，那是燕子姐弟的泪水。

燕子姐弟大喊：“人类醒悟吧，快来保护环境。”

There have been many environmental protection problems in recent years . One of the most serious problem is greenhouse gas emissions have caused climate change ,At the same time ,lots of trees have been used and wasted.So our earth is becoming warmer and warmer . .That brings us illnesses and death.

Luckily ，,many countries have done a lot to stop environmental pollution。Its the most important in the environmental protection today.

In my opinion ,on the one hand ,through education we should make people realize that destroying the environment means destroying ourselves,..On the other hand ,we should try to do something to produce fewer greenhouse gas emissions.

In a word .we must develop low-carbon economy

现在这些年已经有很多关于保护环境的问题。其中最严重的一个问题就是温室气体排放已经造成了气候改变。同时，很多树木被砍伐掉了，而且大量别的资源已经被用完或者浪费。所以我们的地球变得越来越温暖(热)。这样带给我们的是疾病和死亡。。

幸运的是，很多国家已经采取了很多措施来控制环境污染问题。如今，这是最重要保护环境的措施。

我认为，一方面，虽然教育我们应该让人们意识到破坏环境就是伤害人类自己。另一方面，我们应该尽力做一些事情来控制温室气体增长。

总之，我们必须发展低碳经济。

We all know it is becoming more and more important to protect our environment well.We should stop cutting down trees ,dropping litter everywhere and throwing waste before it is processed. It has caused lots of problems such as much rich land becomes desert;Rivers become dirty ;The air is becoming worse and worse ;The temperature is becoming hotter and hotter.So we must do something to change the situation.Wed better walk or ride bikes to work or go to school instead of driving a car,We mustnt use plastic bags.Our government must take some measures to prevent factories producing smoking etc.

Saving Water

The world is not only hungry,but also thirsty for water. This may seem strange to you, since nearly 75 % of the earths surface is covered with water. But about 97% of this huge amount is sea water, or salt water. Man can only drink and use the other 3% -- the fresh water that comes from rivers, lakes,underground, and other sources. And we cannot even use all of that, because some of it is in the form of icebergs and glaciers. Even worse, some of it has been polluted.

However, as things stand today, this small amount of fresh water, which is constantly being replaced by rainfall, is still enough for us. But our need for water is increasing rapidly-- almost day by day. Only if we take steps to deal with this problem now can we avoid a severe worldwide water shortage later on. A limited water supply would have a bad effect on agriculture and industry. Let me give you just one small exampie of how necessary water is to industry. Did you know that to produce a single ton of steel, it takes about 91, 000 liters of water?

We all have to learn how to stop wasting our precious water. One of the first steps we should take is to develop ways of reusing it. Experiments have already been done in this field, but only on a small scale. For us, the systems are as important as the spacecraft.

节约用水

我们的世界不仅饥饿，而且因为缺水而干渴。对你来说这可能似乎奇怪：因为我们的地球表面75%由水覆盖着。但是，这巨大的数量中97%是海水、或咸水。只有剩下3%

的来自河流、湖泊、地下，和其他来源的淡水供人们饮用、使用。即使如此，这3%的水源我们也不能够完全使用，因为有些淡水是以冰山或冰河的形式存在。更糟糕的是，一些水源已遭受了污染。

然而，尽管按现状看来，这些少量的淡水即使时常转化成雨水的形式，对我们来说，也仍然够用。可是我们对水的需求却日益迅速增长。我们只有现在采取措施解决这一问

题才能避免未来世界范围内的严重水资源缺乏。限量供水会对农业和工业产生不良的影响。我们举个小小的事例就能证明水对工业的必要性。每生产一吨钢材就要消耗91，000升水，你知道吗?

我们必须杜绝对宝贵水资源的浪费。我们应该采取的第一步就是要发展水再利用的方法。该领域的实验已在进行，但是仅是小规模地进行。水资源再利用系统的重要性

对我们而言，与空间站不相上下。