| 单词 | 土壤质量 |
| 例句 | DEFINITIVE EXAMPLES 权威例句It is a good idea to let a field lie fallow (= to plant nothing in it) to improve the quality of the soil and restore its fertility.留一块土地休耕以提高土壤质量、恢复土壤肥力是一个好主意。剑桥国际 |
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