Well, in underground systems there are natural discharge points—places where the water flows out of the underground systems, out to lakes and streams.

在地下体系中有自然的排放点——那些水从地下体系流出进入湖泊和溪流的地方。

You know, in the state of Arizona we're managing some major water supplies with this principle of safe yield, under a method that will eventually dry up the natural discharge points of those aquifer systems.

在亚利桑那州，我们正用安全产水量管理着一些主要的水供应，用一个终将使那些含水层体系里的排放点枯竭的方法。