Rock fragments from the subsoil can end up concentrated on the surface.

来自底土的岩石碎片最终可能集中在地表。

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Some movement in the building will occur as It 'settles into the subsoil.

楼房沉到下层土时，楼里就会有动静。

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Some movement in the building will occur as It 'settles into the subsoil.

楼房沉到下层土时，楼里就会有动静。

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