The problems of the polluted city rivers were introduced after stating the general situation of the polluted city rivers in the paper.
介绍了中国城市径流污染状况，指出径流污染控制应纳入污染物总量控制范畴。
The rivers near our city have been seriously polluted recently. The clear water has gone.
最近，我们城市附近的河流被严重污染了。清洁的水不见了。 河流污染。
The rivers near our city have been seriously polluted recently.
最近，我们城市附近的河流被严重污染了。
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