pest /pest/ n.［c］1.害虫：garden pests 园中害虫；get rid of the four pests除四害 Flies and mosquitoes are pests. 苍蝇和蚊子是害虫。2.讨厌的人，害人虫：a pest of society 社会上的害人虫The child is a real pest.这孩子真惹人厌。
pesticide /ˈpestsaid/ n. ［u］杀虫剂：The pesticide was spread over the vegetable plot.菜田里撒上了农药。It is claimed that current levels of pesticide do not pose a threat to health.据称当前杀虫剂的含量不会对健康构成威胁。
