n.绞首刑执行人，桅楼守望员
This causes environmental damage when the topsoil is washed away by the rains.
雨水冲走表层土壤会造成环境破坏。
A thin layer of topsoil was swept away.
薄薄的一层表土被冲走了。
The topsoil has been almost completely washed away.
表层土壤已差不多完全给冲走了.
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