- 释义：
- vi. 变脏
- 例句：
-
A green manure is a crop grown mainly to improve soil fertility.
种植绿肥作物主要是为使土壤更加肥沃.
换一句
-
The organic fertilizer shall keep the soil in good heart.
这有机肥一定会使土壤保持肥沃.
换一句
-
The soil contains 30 times the acceptable level of radioactivity.
这片土壤受到了高于标准30倍的辐射.
换一句