sub·soil 
(sŭbsoil′)
(sŭbsoil′)n.
The layer or bed of earth beneath the topsoil.
tr.v. sub·soiled, sub·soil·ing, sub·soils
To plow or turn up the subsoil of.
subsoil′er n.
| 单词 | subsoil |
| 释义 | sub·soil (sŭbsoil′)n. The layer or bed of earth beneath the topsoil. tr.v. sub·soiled, sub·soil·ing, sub·soils To plow or turn up the subsoil of. subsoil′er n. |
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