那里的水在地下自然加热。
从后来的任务中得到的数据显示,在两极地下不到一米的地方有浓度相当高的氢,由此推断是水。
Data from a later mission indicates significant concentrations of hydrogen and by inference water less than a meter underground at both poles.
包气带中的水会沉降到地下水位,只在矿物颗粒表面留下一层薄薄的水膜。
Water in the vadose zone drains down to the water table, leaving behind a thin coating of water on mineral grains.
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