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来源:雅诚德英语网
The water is usually naturally occurring groundwater that seeps down along fractures in the rock; less typically, the water is artificially introduced by being pumped down from the surface.
水通常是自然形成的地下水,沿着岩石的裂缝渗出;不那么典型的是,水是通过从地表抽水而人工引入的。