soapy clay

例句：

1. 1. The gardener used soapy clay to make the soil more fertile.
   园丁使用肥皂土使土壤更加肥沃。
2. 2.The farmer used soapy clay to improve the quality of his crops.
   农民使用肥皂土来提高他作物的质量。
3. 3.The scientist found that soapy clay could be used as a natural pesticide.
   科学家发现肥皂土可以作为天然的杀虫剂。