drainage

/ˈdreɪnɪʤ/

emptying something accomplished by allowing liquid to run out of it

Chinese meaning: 排水；排水系统

Proper drainage is essential to prevent flooding in urban areas.

良好的排水系统对于防止城市内涝至关重要。

The drainage of the swamp made the land suitable for farming.

沼泽地的排水使土地适合耕种。