The river side pollution will become more serious because of the slow down of river velocity, though the water quantity and self-cleaning capacity increase.

由于水体加大，水流减缓，水环境总体纳污能力增加，但岸边污染将趋严重。

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The river side pollution will become more serious because of the slow down of river velocity, though the water quantity and self-cleaning capacity increase.

由于水体加大，水流减缓，水环境总体纳污能力增加，但岸边污染将趋严重。

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