在地下水位较高的雨季，动物们可以轻易喝到地面渗流水塘的水。
In wet periods, when the water table was high, animals could easily drink from seepage ponds near the surface.
研究人员们提出，稀薄的水膜可能已经年夜雾或者雪进入地面，而且可能已经在轮回的天色转变时代发生过渗流。
Researchers propose that the thin films of water may have entered the ground from frost or snow, and the seepage could have happened during cyclical climate changes.
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