土壤首先是被种植其中的作物消耗掉，其次受自然风化和细菌活动的侵蚀。

The soil is depleted first by having crops grown in it and second by natural weathering and bacterial action.

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土壤首先是被种植其中的作物消耗掉，其次受自然风化和细菌活动的侵蚀。

The soil is depleted first by having crops grown in it and second by natural weathering and bacterial action.

youdao