描寫空氣污染的英語作文2016
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air pollution英語作文【篇一】
Air pollution comes from factories, power stations and cars. Chemicals in the smoke from power stations cause a lot of damage. They can travel hundreds of miles in the wind before falling to the ground in the rain. But this
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
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.
空氣污染來自工廠、電站和汽車。煙霧中的化學物質從發電廠造成很大的傷害。他們可以在風中旅行幾百英里在雨中落到地面之前。但這
空氣污染是當今世界的主要問題之一。需要大量的能量來運行現代工業國家的工廠。汽車、火車、飛機和公交車也需要能量。
幾乎所有的'這種能量是由燃燒燃料。燃燒產生的廢棄物,其中一些仍然在空中,造成空氣污染�？茖W家正在尋找方法來阻止空氣污染特別是大型工業領域和人口稠密的城市。他們正在研究發電的新方法,可以減少對環境的破壞。與此同時,許多發電廠
現代化釋放更少污染的材料。此外,工程師嘗試設計和定位新的發電廠做最小的對環境的破壞。
然而,它可能是之前我們還有很長的路要走有一個
事實上似乎沒有結束任務,環保人士將被要求做的事情。人們會不斷尋找新的方式來控制污染。
air pollution英語作文【篇二】
Due to human activity or natural process, and out into the atmosphere into some harmful substances (pollutants), when the amount of discharged into enough (pollutant concentration up to a limit), makes the original clean air quality to drop, if this situation is maintained long enough, will be to humans, animals, plants, and the atmosphere cause harm and adverse effects of the atmospheric conditions Referred to as the air pollution. Of air pollution has three elements: the concentration of pollution sources and pollutants, harm to human and biological.
Clean the atmosphere is one of the necessary conditions for the survival of humans in, one person in five weeks, no eating or five days without drinking water, to be able to sustain life, but not breathing air for more than 5 minutes, then die, the body to absorb every day 10-12 cubic meter of air. Thus, eliminating air pollution or keep pollution concentration falls below a certain limit, is how important.
Atmospheric self-purification ability to a certain extent, the modern industrial development in the past, due to natural processes such as rank in atmospheric pollutants, and removed from the atmosphere by atmospheric self-purification process the amount of basic balance. But after five, the 60 s of the 20th century, modern industrial development rapidly, human quantity of pollutants into the atmosphere is greatly exceeded the self-purification capacity of the atmosphere, causing the global atmosphere were different degrees of pollution. This caught the attention of the countries, our country has put the protection of the environment, atmospheric environment, water environment, etc.) as a basic national policy of the country.
由于人類活動或自然過程，向大氣中排進了一些有害物質(稱污染物)，當排入量夠多(污染物濃度達一定限度)，則使原來潔凈空氣的品質下降，若這種情況維持時間 夠長，便會對人類、動物、植物和大氣中的物品產生危害和不良影響，這種大氣狀態 稱為空氣污染。組成空氣污染有三個要素：污染源、污染物濃度、對人和生物有危害。
潔凈大氣是人類賴于生存的必要條件之一，一個人在五個星期內不吃飯或5天內不 喝水，尚能維持生命，但超過5分鐘不呼吸空氣，便會死亡，人體每天要吸10—12立方 米的空氣。由此可見，消除空氣污染或保持污染濃度低于某個限度之下，是何等重要。
大氣有一定的自凈能力，現代大工業發展以前，因自然過程等排進大氣的污染物， 與由大氣自凈過程而從大氣移除的量基本平衡。但是20世紀五、六十年代以后，現代 大工業迅速發展，人類排進大氣的污染物量大大超過了大氣的自凈能力，致使目前全 球大氣都遭到不同程度的污染。這引起了各國的關注，我國已把保護環境(大氣環境、 水環境等)作為國家的基本國策。
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