The muddle over how to limit water pollution from a refinery, which at least is easy to identify, does not bode well.
不知如何限制精炼油厂污染水源并不是一个好兆头，因为至少这种污染源点是容易确定的。
This study also researches the ecological system of Chengdu city. The history data shows that the pollution emission of Chengdu is over the limit badly.
之后，本文通过水质分析对成都市的生态系统进行了研究，实测数据显示成都市污染物排放严重超标。
This study also researches the ecological system of Chengdu city. The history data shows that the pollution emission of Chengdu is over the limit badly.
之后，本文通过水质分析对成都市的生态系统进行了研究，实测数据显示成都市污染物排放严重超标。
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