1·Dirty air and water are harmful.
肮脏的空气和水是有害的。
2·However, breathing dirty air may do more than hurt your body.
然而，在污浊的空气中呼吸可能会对你的身体危害更大。
3·Which is considered a weakness of the city-level measures to tackle dirty air?
哪些被认为是城市层面应对空气污染措施的不足之处？
4·Among other weaknesses, the measures cities must employ when left to tackle dirty air on their own are politically contentious, and therefore vulnerable.
除其他弱点外，城市在独自应对空气污染时而必须采取的措施存在政治上的争议，因此也很易受到攻击。
5·Lucy: Perhaps because of the dirty air.
露西：可能是空气污浊的原因。
6·Dirty air is bad to plants and animals too.
肮脏的空气对植物和动物也是有害的。
7·People breathe dirty air al day, every day.
人们每天整日呼吸污浊的空气。
8·Dirty air is bad to plants and animals, too.
肮脏的空气对植物和动物也是有害的。
9·They exhale dirty air inside and inhale fresh one.
用特别的方法排除秽气吸入新鲜空气；
10·A newly refurnished room will have a lot of dirty air.
一个新装修的房间会有很多脏的空气。