Who sets the standard for water quality?

　　水質(zhì)標準由誰(shuí)來(lái)制訂？

　　You can ask for a chemical analysis of your tap water.

　　你可以要求給你的自來(lái)水做化學(xué)分析。

　　The engine is used for pumping water out of the mine.

　　這臺發(fā)動(dòng)機是用來(lái)從礦井中抽水的。

　　What's the depth of the water here?

　　這兒的水有多深？

　　Water is forced through the pipes at high pressure.

　　水在高壓下流過(guò)水管。