昆虫抑制剂

例句：

1. 1. The farmer sprayed the crops with a mixture of pesticides to protect them from insects.
   农民用一种混合的杀虫剂喷洒作物，以保护它们免受昆虫侵害。
2. 2.The children were given some insecticide to help control the spider population in their garden.
   孩子们被给了一些杀虫剂，以帮助他们控制花园里蜘蛛的数量。
3. 3. Insecticides are often used as a last resort to kill off pests that have become resistant to traditional methods.
   杀虫剂通常被用作最后的手段，用来杀死对传统方法产生抗性的害虫。