蓄水池

The cistern is empty but soon fills again.

蓄水池里现在没水,但不久就会储满水的。

The river runs through several underground caves which store the water for the city's use.

这条河流经存城市用水的地下蓄水池。

The tank gradually emptied.

蓄水池的水渐渐流空了。

It serves, they say, as a reservoir of beneficial microbes which can recolonize the gut after it's emptied by diseases such as cholera or dysentery.

他们说它像一个有菌的蓄水池那样工作着，当被像霍乱和痢疾之类的疾病耗尽之后能够迁移到肠道中去。