岩石碎片与腐殖质混合在一起。

The rock pieces mix with humus.

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我们的重点在堆肥是创造腐殖质。

Our focus in composting is to create humus.

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地球表面含有腐殖质和被分解的岩石的部分。

The part of the earth's surface consisting of humus and disintegrated rock.

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如果您不知道什么是腐殖质，加入这个俱乐部。

If you do not know what Humus is, join the club.

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各种植物残体所形成的腐殖质，其性质基本相同。

Various kinds of humus derived from different plant residues are basically the same in nature.

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各种植物残体所形成的腐殖质，其性质基本相同。

Various kinds of humus derived from different plant residues are basically the same in nature.

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