vermin
/ˈvɜ:mɪn; `vəmɪn/ n[U, usu pl v 通常与复数动词连用]
1 certain wild animals and birds (eg rats, foxes, moles, owls) which are harmful to crops and farmyard animals and birds 害兽及害鸟（为害庄稼及家畜家禽的, 如鼠、 狐、 鼹鼠、 枭）
put down (exterminate) vermin 消灭害兽和害鸟. Cf 参看 pest 2.
2 insects (eg lice) sometimes found on the bodies of human beings and other animals 害虫（如虱）
a room alive/crawling with vermin 有害虫的房间.
3 human beings who are harmful to society or who prey on others 为害社会或他人的人; 蟊贼; 害人虫.