关于保护水资源的英语作文精选20篇

It is widely noted that lots of traditional culture is disappearing along with the development of technology. Many ancient architectures and traditional ways of living have been deserted. It seems that the traditional culture and craftsmanship will be replaced in this modern era.

The following reasons can account for the above phenomenon. Firstly, traditional technologies are always considered ineffective while the new sciences are always highly efficient, because modern science and technology facilitate both our daily and academic life a lot, with which we can save much money and time. Secondly, it is costly to protect the traditional culture, especially the maintenance and repair of the historical buildings.

In my opinion, although traditional culture is an ancient heritage, it couldnt keep pace with the development of society. It is the tide of history that the traditional culture and technology will no doubt be eliminated in the end.

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。

Each people all have own dream, so I also have their own dreams. And some

of the dreams are hard to reach, some are very simple. My dream is to fulfill

their own responsibility, maintained a kind heart and cook, these are my dream

dreams.

Actually fulfill their duties and keep a good heart is not so easy to

accomplish, it needs to refrain from anywhere at any time, dont temper tantrum,

do their duty. In addition as a cook, you have to have a calm heart, because as

long as the dry dry floating, how can cook delicious? Alas! Dream is very

difficult to achieve! So I want to use any way to achieve your dream? First to

fulfill their responsibility must be very respectful to parents, teachers, we

also small friends want to have mercy heart, must be kind to everyone, to

serious about anything. Namely: "for the respect for the kind; for a person with

and; to is true". As for the current clinical chef is to craft a good, dont

often dry fast, but well done and so on. As long as do this way, I believe that

there must be a may achieve!

Dreams must depend on oneself, others cant help you, also may not have

spirit to help you. So all things must oneself to do, by himself. I hope my

dream will realize, I more hope you desire can be achieved.

China had cause for a double celebration on Saturday after winning their

first ever swimming gold medal as well as setting a new world record in the

womens 400m medley.

Sun Yang sealed a place in Chinas Olympic history with an impressive swim

in the 400m freestyle final that was only 0.07 seconds off the world record to

take gold.

Defending Olympic champion Park Ta-Hwan was leading at the final turn, but

the 20-year-old Sun surged past his South Korean rival in the final length to

seal a place in Chinese Olympic history.

"The feeling is very nice, its beautiful. Its a big dream come true for

me," said Sun.

"Because its the Olympic Games, I felt a little bit nervous at the start,

and then at the end, I felt that I could get a medal."

Twenty minutes after Yang won Chinas maiden gold medal, 16-year-old Ye

Shiwen triumphed in the womens 400m medley, as well as breaking the world

record set in Beijing four years ago.

Ye rounded off a sparkling day in the pool for China as she claimed the

title with a breathtaking final lap of 28.93 seconds.

"I thought at the 200 meters that the race was lost, but then I realized I

was in the top two or three and I was confident I could win on the last leg,"

said Ye.

"I dreamed of winning the gold medal, but I never ever expected to break a

world record, Im overwhelmed."

Heard the story of the tree a tiger? People use glue to stick to a tree tiger first, and then with the help of their kind nature, attract more tiger fur expensive tree. The overlord of the world, mankind is a great shame!

Since the childhood, I grew up with dogs, because dogs are mans most loyal friend. When I and my grandma often see grandma unprovoked kicked the dog, whenever at this time, I will be to grandma Shouting: "how can you kick the dog grandma?" But how can you listen to grandma? Look at the pathetic little dog, I cant help but nose a acid: because we are human in the earth is to get the ability? Does the dog have dignity? For those self-righteous humans, I have nothing to say! Animals are mans most loyal friend!

Why can only to the snake bite? Know why cats catch people? Not because this is the essence of them, but because they are afraid of human, afraid of the cruel devil! To stop bullying, let us together to protect animals!

听说过树虎的故事吗?人们用胶水先粘住一只树虎，然后借助他们善良的本质，引来更多皮毛昂贵的树虎。这对世界的霸主----人类可谓是极大的耻辱!

从小，我就是和小狗一起长大的，因为狗是人类最忠诚的朋友。我和奶奶在一起时常常看见奶奶无缘无故的踢小狗，每当这时，我都会对奶奶大吼大叫：“奶奶你怎么能踢小狗呢?”可奶奶又怎么能听得进去呢?看着这只可怜兮兮的小狗，我不禁鼻子一酸：因为我们是人类就能在地球是为所欲为了吗?难道小狗就没有尊严吗?对那些自以为是的人类，我无可奉告!动物是人类最忠诚的朋友啊!

只能够到蛇为什么会咬人吗?知道猫为什么会抓人吗?不是因为这是他们的本质，而是因为它们怕人类，怕那些残忍的恶魔!不要再欺负弱小了，让我们一起保护动物吧!

Nowadays, there are more and more students becoming short-sighted. Some students get short-sightedness when they are little. There are fifteen students wearing glasses in my class. Being short-sighted is common among students, even in primary school. That is too serious. Therefore, we should protect our eyes carefully. When we are reading and writing, we should keep a standard posture. Besides, we should not watch TV or play computer for too long. They are bad for our eyes. And, we should do eyes exercises regularly. A good rest is also important to our eyes. In all, eyes are the windows of our mind. We should keep it healthy.

From June1, 2008, shops and supermarkets are forbidden from offering free plastic bags to customers, according to a new law. A nation-wide campaign against plastic bags has been launched.

Nowadays, Chinese people use up to three billion plastic bags a day. While being very convenient to shoppers, plastic bags also cause serious white pollution” and waste resources.

Though the ban may cause some inconvenience to shoppers, it can help reduce the use of plastic bags when people have to pay for them. Besides, the ban, in away, can promote public awareness of environmental protection.

So I think it necessary to forbid shops and supermarkets from offering free plastic bags. When shopping, we can use cloth bags or baskets instead of plastic bags as we used to.

Panda is known as the national treasure of China. The panda was a kind of ordinary animal in China long ago. However, for some reasons, too many of them have been killed. So the number of them is falling quickly.

At present people are taking an important measure to save pandas. People want to find a home for them, and recently, they have set up a nature park for them in Sichuan Province,which is called "Pandas Home. "There pandas can enjoy their life happily. There is a bamboo forest near the Pandas Home. So the pandas can find bamboos easily which they like to eat very much.

Because pandas are well protected now, the number of them is increasing every year. We hope that one day we will have enough pandas to set them free and let them live in the wild again.

Pandas are good friends of man. Man should try to protect them and ]et them live in the way they like!

Honesty is long-lasting virtue of people all over the world. Likewise, it

is also one of the deeply-held values of the Chinese people. Some people believe

that in the market economy, honesty tends to be obsolete. In my opinion, honesty

will never be out of date no matter what the situation might be.

Firstly, honesty has been treasured and honest people have been respected

through history in all parts of the world. People everywhere would regarded

honesty as a virtue and hate a dishonesty person. Secondly, honesty is the basis

of interactions among people. People should treat each other sincerely and open

their hearts to each other. Only in this way can the relationship among the

people be natural. Thirdly, in the market economy, some people try to get more

money at the cost of honesty. To them, a best businessman is one who can cheat

most tactfully. Even in this kind of society, honesty is deeply valued by most

people.

We can see that not only in history, but also at the present day, honesty

was and is valued by the majority of the people and the virtue will not perish

so easily.

Children， you grabbed the small tadpoles right， you must know that tadpole grew up to become small frog， the frog can eat insects， so the frog is our humans good friends。 We should protect it， not hurt it。 But some hotels are also sold the frog meat？ Once， dad and his friends took me to dinner。 A waiter said： "you see， this is we store the launch of new specials， stir flogs ball"。 "Chicken is what ah？" I curiously ask， "chicken is the frog。" The waiter said， with a smile。 I was very angry， because they hurt our good friends—frog！ Another thing， he makes a big inspiration。 One day， when I finish school， saw a man at the school gate at little chicks must sell， and I will have mercy on them。 Because the little chicks must first came to this world， away from the mother， away from the mother love and mother warm embrace， and this is what they faced starved to death， the risk of freezing to death。 At that time I thought： we humans are so happy！ When you see here， did you see to protect our human friends—animals！

Environment for us, it is very important, its like a big umbrella, zhefengdangyu for us to protect our homes, if left the magic umbrella, that our home will be like the Sahara desert, a lifeless, desolate. So I want to give meaning to the world, let us together to protect the environment!

Now our side, however, the environment is worsening, I once saw a man on the side of the road just lost a piece of paper, I was very sad, think if everyone throw a piece of paper, then the world will be what are the consequences? Is terrible, and the world will become a white tips, more think more terrible, I quickly pick up the pieces of paper, thrown into the garbage can. At another time, I saw on TV a report about the environment: fujian on the other side of the river water turbidity is not clear, the fish died in the river, floating in the river every fish mouth blowing, the river still waving white trash, have small bags, candy. The scene is really horrible. Improvement in living standards of people, and their environmental protection consciousness is on the decline. And those without morality of tree, they may have thought about the benefits of trees give us? Tree for we pay so much! So many trees for our block of sandstorm and fearful tornado, these trees should have quietly thoroughly self-reflection, if there are no trees, our living environment is what? Visible at the moment we bad environment, also issued a warning to us, remind us take good care of the environment is urgently needed! I think good care environment, everyone duty, so we have to start from now, start from the side, do not spit everywhere, dont throw the paper scraps, less use notebook, can when checking the finished with the book, read the newspapers to practice calligraphy. To protect the environment as the most important work, set up environmental protection consciousness, the guardian to protect the environment.

"To protect the environment, everyone duty." I am going to put this sentence in mind, take this sentence as a seed, I will use attentive to watering it, let it grow, let the "care for the environment, everyone duty" this sentence. I believe that as long as we work together, in the near future, our environment will be getting better and better.

环境对于我们来说，是非常重要的，它就像一把大伞，为我们遮风挡雨保护我们的家园，如果离开了这把神奇的伞，那我们的家园就会像撒哈拉大沙漠一样，一片死气沉沉，荒无人烟。所以我要向全球发出意示，让我们一起保护环境吧!

然而现在我们身边，环境越来越恶化，有一次我看见一个大人在路边随便丢了一张纸，我非常伤心，心想如果每个人都丢一张废纸，那么这个世界会是什么后果呢?真是太可怕了，整个世界就会变成白色的垃圾站，越想越可怕，我急忙把这个纸片捡起来，丢进垃圾桶里。还有一次，我在电视上看见一篇有关环境的报道：福建那边的江水浑浊不清，江里的鱼都死了，浮在了江面，每条鱼的嘴里都吐着白沫，江边还飘着白色垃圾，有小食品袋，糖果皮。这一景象真是惨不忍睹。人们的生活水平在提高，自身的环保意识却在下降。还有那些没有道德的伐树者，他们可有想过树给我们带来的好处呢?树为我们人类付出了那么多!那么多树为我们挡住袭来的沙尘暴和可怕的龙卷风，这些伐树者真应该静静的好好的反省一下，如果没有了树，我们的生活环境又是什么样子呢?可见目前我们环境的恶劣，也是在向我们发出了警告，提醒我们爱护环境刻不容缓!我认为爱护环境，人人有责，所以我们要从现在做起，从身边做起，不要随地吐痰，不乱丢纸屑，少用本子，用完的本子可以当验算本，看完的报纸可以练习毛笔字。把保护环境当做最重要的工作做下去，树立环保意识，做环保守护者。

“保护环境，人人有责。”我要把这句话铭记在心，把这句话当作一颗种子，我会用细心去浇灌它，让它茁壮成长，让“爱护环境，人人有责”这句话传递下去。我相信，只要我们齐心协力，在不久的将来，我们周围的环境一定会变得越来越好。

ladies and gentlemen, i want to say something about trees. as we know now trees are very important to human beings. first of all, they benefit our health.

they send out oxygen for us to breathe. we cant live without trees.secondly, trees can beautify our environment.as trees are so important, we must do our best to protect them. we must enforce the tree protection laws. we must plant as many trees as possible.only in this way can we live happily in the beautiful world.

[保护环境为题目的英语作文

When I was younger , I went through an thing which deeply influence me.

One day,I went to school as Usually. All of a sudden,I heard a voice

crying.I knew there were something wrong . So I walked towards the direction of

the voice .Then I found a child and his mother wandered off.My heart full of

compassion . So I decided to help him find his mother , and I took him to the

police station nearby . Then I went to school in a hurry , but when I arrived,I

found I’m still late . After my teacher’s preaching , I went back to the

classroom .I was so upset.

In the afternoon, my teacher asked me go out,he said he had wronged me. And

then I saw the child’s mother,she thanked me a lot,and I smiled shyly.

After the thing,I feel very happy to do good things,and I believe that

“give cake and ale to perfect soul”.

我们地球上有许多有益的动物，我们要保护它们。

There are many useful animal we on earth, we should protect them.

青蛙它是两栖动物。它生活在水里，或在靠近水边的地方。它专门吃田里害虫。它是农作物的“忠诚卫士”，是天然的捕虫机。一只青蛙平均一天吃70只害虫，一年能吃掉15000条害虫。

Frog it is amphibious animal. It lives in the water, or in close proximity to the waters. It is designed for field pests. It is the crop "loyal guards", is a natural insect catching machine. The average of a frog to eat 70 pests a day, a year can eat 15000 pests.

蜻蜓也很厉害。一只蜻蜓一个小时能吃20个蝇子或840只蚊子，真令人惊讶!

Dragonfly is also very powerful. A dragonfly one hour to eat 20 or 840 mosquitoes fly, really surprising!

燕子就更厉害了，它一只燕子一个夏天就能吃掉50万条害虫，燕子真是人类的好帮手!

The swallow is even more powerful, it is a swallow a summer can eat 500000 pests, swallow is a really good helper!

蜜蜂可以给我们人类带来甜甜的蜜，它也对我们有益的，我们要保护它。

Bees can give us to bring sweet honey, it is good for us, we must protect it.

地球上的有益动物，我们都要保护它们。

Useful animal on earth, we should protect them.

人们总以为淡水是取之不尽的，实际上淡水资源是很有限的。请谈谈你的看法。

It is generally believed that there is a good supply of fresh water. But to our disappointment, the fact is just the opposite.

As we can see, the world population is growing rapidly day by day. So enough fresh water is needed to feed such a big population. Whats more, with the development of industry, factories and vehicles produce poisonous gases or wastes, which consequently results in the pollution of water. Though fresh, a good amount of it can no longer be used. Only quite limited fresh water resource is available to human beings. So its high time for us human beings to take quick action to protect water resource. Stop pollution and save water, otherwise, we cannot survive on the earth.

With fresh water, the world will be prosperous.

“喂!好的……”一个满面胡渣的男子接过电话，兴高采烈的开着车离去，我不知道他要干什么，但是看样子一定是要干什么坏事。

第二天很快到来了，阳光明媚，鸟语花香。我舒服的躺在树上的鸟窝里，沐浴着从树叶间洒入的光芒，一切都如静止般，连树叶沙沙的声音都听得见。这已经是地球上唯一一片没有人来过的森林了，四处生机勃勃，奇花异草遍地都是，可是就在昨天，一位中年男子来过，我们大家都知道，这样的好日子为时不多了。

“轰轰——”果不其然，那人又开着车过来了，只是旁坐多了些东西，脸上挂着有些可怕的笑容，嘴里还在嘀咕着什么，大家纷纷聚在一起，松鼠说，他是个恶魔;蝴蝶却不以为然，觉得他是好人;许多动物都准备好了行囊，准备离开。

终于，他下了车，一手拿着锯子，一手握着板凳，身上还背着个斧子，和一条又粗又长的黄绳子。呀!大事不妙，是伐木工!同伴们也瞧见了，急得直跺脚，大树爷爷也是，叶子都拉拢下来。我心想：“这可怎么办?我一定要保护我的家园，无论有多危险!”

不一会儿，伐木工便来到了我所居住的树下面，他张大嘴巴，又瞪大了眼睛，叫到：“天呢!这么粗壮的一棵树，我可发财喽!”说完他放下背包，抡起锯子就向树爷爷挥去，树爷爷惊恐万状，大喊：“快跑呀!小啄木鸟。”眼看着锯子要砍倒树爷爷了，我闭上眼睛，向伐木人用力啄去，“唉吆喂，我不砍了，不砍了，求你别啄我了，我漂亮的头发呀!”

终于，伐木工回到了车上，森林又重回原来的安静、安详……

At present,the endangered animals are increasingly fast.How to protect them become our priority.People are crazy about killing animals for their meat, fur.But it is wrong because that animals are our friends, we should try to protect them,instead of killing them to die out. Pandas are represents of endangered animals, which live in the forest and live on bamboos for food. They only depend on the nature reserves to live. We should stop killing animals, and protect them better

With the improvement of peoples living standard, people more and more do not take the protection of the environment, throw rubbish everywhere and spit everywhere.

Whenever I see garbage on the ground, I will be deeply touched, protect the environment, starts from me. Take the a small river near my house, for instance, in the past, the water in the river is very clear, like a bright mirror, can see clearly the many stone in the river; You can see fish free in swimming in the river. There are often many children playing, playing in the river water; The adults in the river to wash the dishes, washing clothes. Gradually, people then throw the garbage into the river, sewage discharge into the river, make the river as well as smelly and dirty, can no longer on the bottom, into a murky waters of the bin. Serious environmental pollution, serious harm peoples health. Yes, only set up the idea of protecting the environment, have a better tomorrow.

On Sunday, I find to my good friend small good, each with a plastic bag, pick up the trash in the river one by one to light, our hands are full of bags, is really "to eat"! Even if we pick up the trash in the river, but you cant stop the garbage in the river, get off there will be, how to do? The most critical or arouse peoples environmental consciousness, we took a plank on the plate is greatly write: please protect the environment, starts from me. We put it in the river, in a prominent place in the task is complete, we are pleased to go home.

In order to protect our own home, in order to protect our own life, for the sake of our own future, in order to our beautiful environment, make the sky bluer, the water cleaner, let mother earth more lovely and more vibrant, let us open hands, a love, out of a force, creating a green environment.

随着人们生活水平的提高，人们越来越不重视保护环境，随地扔垃圾，随地吐痰。

每当我看到地上的垃圾，我就会感慨万千，保护环境，从我做起。就拿我家附近的一条小河来说吧，以前，河里的水十分清澈，像一块明亮的大镜子，可以清清楚楚地看到河底的许多石头;可以看到小鱼在河里自由自在在游来游去。经常有许多小朋友在河里嬉戏、玩水;大人们在河里洗菜，洗衣服。渐渐的，人们于是把垃圾扔到河里，污水排放到河里，使河水变得又臭又脏，再也不能清澈见底，变成了浑浊不清的垃圾箱。严重污染环境，严重危害了人们的身体健康。对，只有树立保护环境的观念，才有美好的明天。

星期天，我找来我的好朋友小好，每人拿一个塑料袋，把河边的垃圾一一捡光了，我们手里都是满满的一塑料袋，真是“满载而归”啊!即使我们把河边的垃圾捡光了，但是河里的垃圾是阻止不了，捞掉了还会有，怎么办好呢?最关键的还是唤起人们的环保意识，我们找来一块木板在板上大大地写上：请保护环境，从我做起。我们把它放在河边最显眼的地方，任务完成，我们高兴地回家了。

为了保护我们自己的家园，为了保护我们自己的生命，为了我们自己的将来，为了我们美好的环境，让蓝天更蓝，让清水更清，让地球妈妈更可爱，更生机勃勃，让我们张开小手，献一份爱，出一份力，共创绿色的环境。

日常生活中，水是不可缺少的。

水在有些人眼里显得一文不值，但是在珍惜生命的人的眼里是非常宝贵的！有些人会想：水是永远都在的，尽管浪费着好了，水是不会用完的！

好几次在学校里，我看见很多二年级的小朋友洗手总是不关水龙头，水花四溅！任它流着……“哗哗哗，哗哗哗，哗哗哗，哗哗哗，哗——”这是水的叹息，它在叹息：为什么要浪费我？

那些不节约水的人，想过没：浪费水资源也是在浪费自己的生命，白白地糟蹋生命！

我看那些人是要等到干旱了的时候，水没了！才会想到自己的过错，可来不及了！那个时候，有一滴水也是好的！

想想看，你渴口的时候是谁帮你解决困难？帮你身体清洗干净的是谁？是水。

谁是生命的唯一源泉！珍惜水资源！珍爱生命！让我们的明天更美好！

[二年级保护水资源作文

Chengdu City Chengdu, the capital city of Sichuan province in China, has

been recognized as “the land of abundance” for a long time. With rich cultural

heritage, Chengdu is one of the most popular destinations for tourists in China.

People who once step onto the land of Chengdu city will quickly fall in love

with life there. It seems that Chengdu people are living a happy life with less

pressure from their occupation, family or from the conflict social competition.

Children, for example, can enjoy the child-only facilities in the parks. They

can play with peers and make friends with each other. For teenagers and adults,

the various entertainment places and snack streets are indispensable part of

their life. The old in Chengdu can also sit in a teahouse with a cup of tea

after dinner and gossip their family. The pace of life in Chengdu is slower than

in other big cities. People tend to spend more time and efforts to create and

experience happiness.

Chengdu is a city where one comes and doesn’t want to leave. There are many

famous scenic spots such as Jingli, Kuanzai Street, Tianfu Square and Chengdu

Panda Base. In Chengdu, one can not only enjoy shopping in Tianfu square,

walking on the ancient streets and buy souvenirs in traditional houses or stores

on Jingli and Kuangzai Street, but also play with cute pandas and help feed

their cubs in the Panda Base. Furthermore, watching a Sichuan Opera Show will

also provide a newcomer with unforgettable and precious memories. The delicate

face-changing in Sichuan Opera has become a symbol of Sichuan culture.

Water pollution on the impact of industrial and agricultural production of industrial and agricultural production not only need to have enough water, but also have some requirements for water quality. Otherwise, the industrial and agricultural industry will cause great losses, especially in the industrial and agricultural production process using contaminated water, the human has a great harm. First, the destruction of industrial equipment, a serious impact on product quality. Second, the chemical composition of the soil changes, fertility decreased, leading to crop reduction and serious pollution. Third, the city to increase domestic water and industrial water treatment costs.

Clean air is the necessary material basis for people to survive, an adult to breathe an average of 15 cubic meters of air a day, if people breathe heavily polluted air, no doubt harmful to health. Therefore, the study of the impact of air pollution, awareness of the value of clean air is a very complex frontier research project. And children in the growth and development stage, is the most sensitive to the outside world air pollution, the study of air pollution on children more likely to obtain valuable results. Based on this, the Chinese Academy of Engineering, China Environmental Monitoring Station Chief Engineer Wei Fusheng for the Chinese chief scientist of the Sino-US scientific and technological cooperation projects one by one air pollution on the impact of human respiratory health research, in Guangzhou, Wuhan, Lanzhou, Chongqing and other cities and suburbs The results showed that 8196 questionnaires were used to investigate the pulmonary function of children in the air, including environmental monitoring data, and about 3 million data were obtained. After statistical analysis, Air pollution has a quantitative understanding of the effects of human respiratory health (especially children). The results confirmed that the impact on human health to the fine particles of air pollution is most serious (China has 2/3 of the city exceeded), followed by sulfur dioxide pollution (1/3 of our city exceeded), the impact of nitrogen oxide pollution relative Weak. It can be said that fine particles (respirable particulate matter) is the first killer of human health. According to experts, particulate matter attached to the toxic heavy metals, acidic oxides compared with the soil enrichment hundreds of times, thousands of times, or even tens of thousands of times, and can float in the air up to several days, harmful substances with the inhalation Particles into the human lungs, and may through the alveolar into the blood, directly endanger human health.

Recently, the eight-year research results in Beijing adopted by the State Environmental Protection Administration presided over the expert appraisal. Experts believe that this research results for our understanding of the importance of clean air, improve the public and the leadership of environmental awareness is of great significance. The data of the research results provide a scientific basis for the national air environment legislation, the development and revision of air quality standards, emission standards and air pollution control policies.