problem soil造句

例句与造句

1. since most fertile lands have been cultivated, the expansion of the agricultural land has been extended to marginal and problem soils with poor nutrient supply
   因为大多数肥力较高的土壤都在进行种植，所以增加农业耕地面积只有向边际地区和土壤养分含量低并存在某些问题的土壤上扩展。
2. It's difficult to find problem soil in a sentence. 用problem soil造句挺难的