plain-clothes
adjective /ˌpleɪn ˈkləʊðz/, /ˌpleɪn ˈkləʊz/
/ˌpleɪn ˈkləʊðz/, /ˌpleɪn ˈkləʊz/
[only before noun]- (of police officers on duty) wearing ordinary clothes, not uniform
(警察执行任务时穿的)便衣,便服 - plain-clothes police officers
便衣警察
- plain-clothes police officers