| 单词 | topsoil |
|---|---|
| 音标 | 英[ˈtɒpsɔɪl] 美[ˈtɑpsɔɪl] |
| 解释 | n.表土（层），耕作（层）;耕层; |
| 例句 | N-UNCOUNT 表土（层） Topsoil is the layer of soil nearest the surface of the ground. |
| 变形 |
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