剑桥词典a vertical pipe that is connected to a water supply and provides drinking water （供給飲用水的）竪琯 in the US, a vertical pipe that is connected to a water supply and provides water to a public place such as a building or bridge , and that is used when there is a fire （美國爲公共場所供水以在滅火時使用的）竪琯 返回 standpipe