Today, many polluted rivers are getting clearer and clearer.
今天，许多污染了的河流变得越来越清澈。
Today, many polluted rivers are getting cleaner and cleaner.
今天许多污染了的河流变得越来越干净。
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。
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。
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