n.排水；排水系統(tǒng)；污水；【醫(yī)】引流（法），導(dǎo)液（法）

Bad drainage caused the land to be flooded. 排水不利容易使土地淹水。

The drainage system has been aged. 排水系統(tǒng)已經(jīng)老化了。

The town's drainage is very efficient. 這城市的排水系統(tǒng)很好。

He came to look at the drainage. 他是來檢查排水設(shè)備的。

The city was even equipped with a drainage system, for a great many clay pipes were found beneath the narrow streets. 這座城市甚至還鋪設(shè)過排水系統(tǒng),因為在窄窄的街道底下發(fā)現(xiàn)了許多陶土制的管道。

Never pipe the discharge line directly into a drainage ditch, sewer or sump. 不要把排泄管直接插入排泄地漏、污水管或污水坑里。