空气污染是当今世界的主要问题之一。下面是小编收集的英语作文，供大家参考!
air pollution英语作文【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.
空气污染来自工厂、电站和汽车。烟雾中的化学物质从发电厂造成很大的伤害。他们可以在风中旅行几百英里在雨中落到地面之前。但这
空气污染是当今世界的主要问题之一。需要大量的能量来运行现代工业国家的工厂。汽车、火车、飞机和公交车也需要能量。
几乎所有的这种能量是由燃烧燃料。燃烧产生的废弃物,其中一些仍然在空中,造成空气污染。科学家正在寻找方法来阻止空气污染特别是大型工业领域和人口稠密的城市。他们正在研究发电的新方法,可以减少对环境的破坏。与此同时,许多发电厂
现代化释放更少污染的材料。此外,工程师尝试设计和定位新的发电厂做最小的对环境的破坏。
然而,它可能是之前我们还有很长的路要走有一个
事实上似乎没有结束任务,环保人士将被要求做的事情。人们会不断寻找新的方式来控制污染。
air pollution英语作文【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.
由于人类活动或自然过程，向大气中排进了一些有害物质(称污染物)，当排入量够多(污染物浓度达一定限度)，则使原来洁净空气的品质下降，若这种情况维持时间 够长，便会对人类、动物、植物和大气中的物品产生危害和不良影响，这种大气状态 称为空气污染。组成空气污染有三个要素：污染源、污染物浓度、对人和生物有危害。
洁净大气是人类赖于生存的必要条件之一，一个人在五个星期内不吃饭或5天内不 喝水，尚能维持生命，但超过5分钟不呼吸空气，便会死亡，人体每天要吸10—12立方 米的空气。由此可见，消除空气污染或保持污染浓度低于某个限度之下，是何等重要。
大气有一定的自净能力，现代大工业发展以前，因自然过程等排进大气的污染物， 与由大气自净过程而从大气移除的量基本平衡。但是20世纪五、六十年代以后，现代 大工业迅速发展，人类排进大气的污染物量大大超过了大气的自净能力，致使目前全 球大气都遭到不同程度的污染。这引起了各国的关注，我国已把保护环境(大气环境、 水环境等)作为国家的基本国策。
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