Natural replenishment of this vast supply of underground water occurs very slowly.
靠自然补充大量地下水是十分缓慢的。
In some countries the supply of water from underground can be the only source of water available.
在一些国家由地下水供给的水是仅有的可用水源。
Underground water is the main water supply in Suihua Area.
地下水是绥化地区的主要供水水源。
Underground water is the main water supply in Suihua Area.
地下水是绥化地区的主要供水水源。
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