名词
1. That guy is a regular pest.
那家伙是个十足的讨厌鬼。
2. Animal and vegetable pests spread with extreme rapidity .
动植物疫害传播极快。
3. The severe frost killed off most of the insect pests.
严霜杀死了大多数害虫。
4. Insects which eat crops are pests.
吃庄稼的昆虫是害虫。