The thin soil that covers the forest floor can be easily washed away.

覆盖在森林地表的一层薄土很容易被冲走。

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During the brief summer, a thin layer of frozen soil thaws at the surface.

短短的夏季里，表面很薄的一层冻土融化了。

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The soil is very thin in the forest.

森林里的土层非常薄。

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The soil is very thin in the forest.

森林里的土层非常薄。

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