Who sets the standard for water quality?
水质标准由谁来制订？
You can ask for a chemical analysis of your tap water.
你可以要求给你的自来水做化学分析。
The engine is used for pumping water out of the mine.
这台发动机是用来从矿井中抽水的。
What's the depth of the water here?
这儿的水有多深？
Water is forced through the pipes at high pressure.
水在高压下流过水管。