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1·Filters are used to purify water.

过滤器被用来净化水质。

2·The hydrophytes can purify water body.

水生植被具有净化水体的作用。

3·The WLPS system can purify water obviously.

利用WLPS系统处理，水质净化效果显著。

4·I can hunt, I can fish and I can purify water.

我可以打猎，我可以鱼，我可以净化水质。

5·One of the ways to purify water is to make it spew slowly from the soil.

净化水的方法之一是让它从土中慢慢地渗出。

6·One of the ways to purify water is to make It 'spew slowly from the soil.

净化水的方法之一是让它从土中慢慢地渗出。

7·This paper introduces a new type unit to purify water by physical-chemical process.

本文介绍一种新型理化法水净化处理机。

8·You can also purify water by boiling it and condensing the steam which you have collected.

你也可把水煮沸，将收集到的蒸汽凝结，用这样的方法来提取纯水。

9·It uses rice husks (which are among the country’s most common waste products) to purify water.

它使用谷物外壳（印度最普通的工业垃圾之一）过滤清水。

10·Our findings show that PSB could improve the survivability, promote growth and purify water quality.

结果表明：PS B具有提高家禽、水产动物成活率、促进生长、净化水质的作用。