Above the water table is the vadose zone, through which rainwater percolates.

地下水位的上方是包气带，雨水从中渗透。

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Cool ground water near the surface percolates down into the earth.

地表附近的凉水经过过滤渗透到地下。

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Cool ground water near the surface percolates down into the earth.

地表附近的凉水经过过滤渗透到地下。

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