这个村庄的水源来自附近山上的水库。

The village gets its water supply from the ___reservoirs in the nearby mountains.

这个含水层是一个重要的地下水库，为城市提供水源。

This aquifer is an important underground ___reservoir that supplies water to the city.

这片森林是许多稀有物种的宝库。

This forest is a ___reservoir of many rare species.