| 释义 |
Erosion has dissolved acres of topsoil.侵蚀作用已使大量表土层流失。This causes environmental damage when the topsoil is washed away by the rains.表层土壤被雨水冲走之后，便会对环境造成破坏。Rainwater had washed away all the topsoil.雨水把表层土都冲走了。A thin layer of topsoil was swept away.薄薄的一层表土被冲走了。 |