"The day they finish building a reservoir is the day it begins to die," for when the silt washed into a reservoir by its river reaches its outlet gates, this marks the end of its useful life.
「水庫完成之日，就是水庫死亡的開始」，當河水沖刷帶來的泥砂淤塞出水口，水庫也形同壽終正寢。