降水往往会把细小的粘土颗粒转移到土壤的最微小的空隙中，使这些空隙变得封闭，从而形成了一种几乎不允许任何水分渗透下来的表层土壤。
The impact of raindrops on the loose soil tends to transfer fine clay particles into the tiniest soil spaces, sealing them and producing a surface that allows very little water penetration.
如果感觉水分渗透速度减慢，可以依照前面的方法再做补充。
If feel moisture permeability velocity slows, can according to previous method to do added.
海水不仅不能抽走植物细胞里的水分，海水中的盐分反而会进入细胞内部，这就是所谓的反渗透。这种反渗透能力增加了细胞的强度。
Instead of freshwater moving out of the plant cells, salt from the seawater enters, reverse osmosis, and this actually strengthens the cells.
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