air pollution is threatening the health of people in urban a

air pollution is threatening the health of people in urban a People are worrying___the pollution of the air. A.in B.with What is the cause pollution of air? 英语翻译People and the sources of air pollution are found in the It is urgent that the acute problem of air pollution in the The air pollution is one of the biggest c____ in China today Air pollution is one of the b____problems in our life 按首字母应该 翻译the level of air pollution in that city is four times as h Much of that ozone came from pollution blowing in __ urban a 修改一下这几句英文As a matter of fact,the air pollution here is getti air pollution is a problem in the city cfnter.怎么翻译 there is less air pollution than in the city