Recently the chroma of the river water is a little yellowish. Does there exist any polluting sources nearby?
最近河水的色度有些偏黄，是不是附近存在污染源啊？
On the other hand, the affected area of high concentration can also be decreased by optimizing the position of polluting sources.
同时，优化污染源的位置也可以达到减少建筑群内污染物高浓度的影响区域。
On the other hand, the affected area of high concentration can also be decreased by optimizing the position of polluting sources.
同时，优化污染源的位置也可以达到减少建筑群内污染物高浓度的影响区域。
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