| 词汇 | subsoil |
| 释义 | subsoil/ˈsʌbsɔɪl ||; ˈsʌbˌsɔɪl/noun [u] (in geography 地理学) the layer of soil between the surface of the ground and the hard rock underneath it （土壤的）底土，心土 ☞look at topsoil. 参看topsoil。 |
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