杀虫剂

例句：

1. 1. To keep thegarden free from insects, we use avariety of insecticides.
   为了保持花园里没有昆虫，我们使用各种杀虫剂。
2. 2. The farmers sprayed thecrops with pesticides to protect themfrom pests.
   农民们用农药喷洒作物以保护它们免受害虫的侵害。
3. 3. We need to be careful when usinginsecticides, as they canbe harmful to both humans and animals.
   在使用杀虫剂时要小心，因为它们对人类和动物都是有害的。