Rain washes away loose soil and penetrates cracks in the rocks.
雨水冲走了松散的土壤,穿透了岩石的裂缝。
In some cases, the loose soil is blown completely away, leaving a stony surface.
在某些情况下,松散的土壤全部被风吹走,只剩下石质化的表层。
In contrast, the roots of grasses and other small plants may help to hold loose soil fragments together, thereby helping to prevent erosion by the wind.
相反,草和其他小植物的根可能有助于把松散的土壤碎片固定在一起,从而助于防止风的侵蚀。
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