... eduction device 减轻空气污染的装置 air pollution region 空气污染的地区 air pollution source 空气污染源 ...
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发展中国家受空气污染影响最为严重，在一些地区，劳动力收入损失几乎相当于国内生产总值的1%。
The effects of air pollution are worst in the developing world, where in some places lost-labor income equals nearly 1% of GDP.
让他们感到困惑的是他们怎样才能消除这个地区的空气污染。
The question that puzzled them is how it is that they can get rid of the air pollution in the area.
为了创造一个有益于环保和安全的世界，每个国家都有必要定出汽车限额，并限制发放许可证的数量，以控制地区的空气污染。
In order to create an environmentally friendly and safe world, it is necessary for each country to set vehicular quotas and limit the permits in number to control regional air pollution.
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