To better control and prevent water pollution in rivers, it is necessary to know the conditions of water quality in rivers in time.
为了更好的对河流水体污染进行控制和治理，及时了解河流的水质状况是必要的。
Work was energetically carried forward to improve the water environment of Taihu Lake and prevent and control water pollution in the Liao, Huai and Songhua rivers and other key water basins.
太湖水环境综合治理和松花江、淮河、辽河等重点流域水污染防治工作积极推进。
The purpose of the analysis is to provide a reference to keep a balance of ecology in water, control the water pollution and prevent eutrophication of water.
目的是为更好地维持水体生态平衡，控制水体污染，预防水体富营养化的发生提供参考。
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