害鼠

例句：

1. 1. The rodent is a common pest in many homes.
   啮齿动物是许多家庭常见的害虫。
2. 2. The farmers are trying to control the harmful snails that damage their crops.
   农民们正在试图控制危害他们农作物的有害蜗牛。
3. 3. The pesticide spray was effective in killing the harmful insects.
   这种杀虫剂喷洒有效杀死了有害昆虫。