Polluted rivers and lakes have also been a cause of death.
污染的河流和湖泊也是造成死亡的一个原因。
Many rivers and lakes are seriously polluted.
许多河流和湖泊受到严重污染。
On the other hand many rivers and lakes have been polluted.
另一方面许多河流和湖泊被污染。
The rivers and lakes in this area are being polluted by this factory.
这个地区的河流和湖泊正在受这家工厂的污染。
Many rivers and lakes are seriously polluted.
很多河流湖泊已经受到严重污染。
Many rivers and lakes are seriously polluted.
很多河流湖泊已经受到严重污染。
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