杀螨剂

例句：

1. 1. The farmer used a pesticide to kill the weeds in his field.
   农民使用一种杀虫剂来杀死他田地里的杂草。
2. 2. The pesticide was effective in controlling the population of mosquitoes in the area.
   这种杀虫剂在控制该地区蚊子数量方面是有效的。
3. 3. To prevent diseases, farmers use pesticides on their crops.
   为了预防疾病，农民们在他们的农作物上使用杀虫剂。