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。
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。
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。
应用推荐