D-D soil fumigant

例句：

1. 1.The soil fumigant was used to kill weeds in the garden.
   土壤熏蒸剂被用来杀死花园里的杂草。
2. 2. The farmers used the soil fumigant to control pests in their crops.
   农民们使用土壤熏蒸剂来控制他们作物中的害虫。
3. 3.The soil fumigant is a safe and effective way to treat soil contamination.
   土壤熏蒸剂是一种安全且有效的处理土壤污染的方法。