因此，许多河流和湖泊被污染，在一些地区，空气也变得肮脏的和有害的。

As a result, a lot of rivers and lakes are polluted, and in some areas, the air also becomes dirty and harmful.

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因此，许多河流和湖泊被污染，在一些地区，空气也变得肮脏的和有害的。

As a result, a lot of rivers and lakes are polluted, and in some areas, the air also becomes dirty and harmful.

youdao