英语翻译The dark smoke that comes out of stacks,burning dumps and trucks and cars contains tiny bits of chemical matter.Most of this chemical matter cannot be seen by human eyes.It causes the serious problem of air pollution.In many places it kee
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英语翻译The dark smoke that comes out of stacks,burning dumps and trucks and cars contains tiny bits of chemical matter.Most of this chemical matter cannot be seen by human eyes.It causes the serious problem of air pollution.In many places it kee
英语翻译
The dark smoke that comes out of stacks,burning dumps and trucks and cars contains tiny bits of chemical matter.Most of this chemical matter cannot be seen by human eyes.It causes the serious problem of air pollution.In many places it keeps us from seeing the sun and causes us to cough or makes us ill.Air pollution can spread from city to city.It even spreads from one country to another.Some northern European countries have had “black snow” from pollutants that have traveled through the air from other countries and have fallen with the snow.So air pollution is really a global problem.
There are health dangers from air pollution.Statistics show that air pollution in cities increases the risk of certain lung diseases such as emphysema,bronchitis and asthma.It can kill babies,old people and those who have respiratory diseases.In London,in 1952,four thousand people died in one week as a result of serious air pollution.In 1948,in the small town of Donora,Pennsylvania,twenty people died in a four-day period of bad air pollution.
Scientists have found out that chemicals in the polluted air can cause changes in our cells.These changes may cause babies to be born with serious defects.
Scientists also have learned that these chemicals we are apt to take into our bodies from air ,water and food act together to affect our health and the way our bodies work.In order to keep healthy and live longer,we must keep air pollution under control.
Air pollution can cause airplane and auto accidents because it cuts down visibility.It also has harmful effects on animals,plants and farm crops.It damages our works of art and dirties and corrodes our fine buildings.The cost of all this damage in the United States is thought to be more than $20 billion every year.This is far more than the money we need to control air pollution.So air pollution is not only a big threat to our health but it also costs us a tremendous amount of money.That is another reason why we must find every possible way to control air pollution.Though it is still difficult now to solve the problem of air pollution completely,we cannot afford to wait till we have all the answers.
英语翻译The dark smoke that comes out of stacks,burning dumps and trucks and cars contains tiny bits of chemical matter.Most of this chemical matter cannot be seen by human eyes.It causes the serious problem of air pollution.In many places it kee
大烟囱里的黑烟,燃烧的垃圾场,卡车和轿车含有微小的化学物质位.大部分的化学物质日人眼无法看到.缺造成了严重的空气污染问题.在许多地方,人们已经看不到太阳,还致病患上了咳嗽.空气污染可以传播到从一个城市传播到另一个城市.甚至会从一个国家传播到另一个国家.在北欧的一些国家,由于从别国飘散而来的这些被污染的空气,在当地已经下的是“黑雪”.空气污染已然成为真正全球性的问题.
空气污染危害健康.统计显示,城市空气污染增加某些肺部疾病,如肺气肿的风险,支气管炎和哮喘.空气污染可以致死婴儿,老年人和那些有呼吸系统疾病.在伦敦,1952,一周时间,四千人由于严重的空气污染死亡.1948,在多诺拉,小镇宾夕法尼亚,4天内20人死于糟糕的空气污染.
科学家们发现了,这些污染的空气里的化学物质造成了细胞的变化.这些变化可能会导致出生婴儿的严重缺陷.
科学家也发现这些化学物质,会随着空气,水和食物一起进入我们的身体,来影响我们的健康和身体各个机能的工作.为了保持健康长寿,我们必须持续控制空气污染.
空气污染,能见度低,会引起飞机和汽车事故.它也对动物、植物和农作物造成了严重的影响.它损害我们的艺术作品,还会腐蚀我们精美的建筑.每年,在美国,这一切的损害造成的成本被认为是超过20000000000美元.这比用来控制空气污染花费要多的多.空气污染不仅是对我们健康的一大威胁,而且也是人们要为之花费一大笔钱.这是另一个原因,我们必须找到每一个可能的方式来控制空气污染.现如今,尽管要彻底解决空气污染问题非常困难,但是我们不能等到有了所有解决办法再去控制它.
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