1.Water pollution can be a grave threat not only to humans but also to any living species in lakes and, rivers.

水污染不管是对人类还是对湖里和河里的任何物种都是—个严峻的威胁j_td8J.;wP1A。

2.Water pollution has become an alarming problem with potentially serious consequences for the environment, human health and economic development.

水污染已经成了一个令人担忧的问题，它对环境、人类健康和经济发展都有潜在的严重影响ubPm|#1y_32f3^9]1。

3.Waste-water treatment facilities should be recommended for the cost-effective treatment of both sewage pollution and agricultural waste-water.

污水处理设备应该用于对污水污染和农业废水进行低成本高效益的处理0%defQrfmkEk|4。

4.The long-term effects of improving the quality of water resources are beneficial in every aspect.

提高水资源质量所带来的长期影响在各方面都是有益的1cp900b6Em=*。