ㄨㄛˋㄉㄧˇwòdǐ

卧底
  1. 潛伏對方內部暗中內應

to hide (as an undercover agent)​, an insider (in a gang of thieves)​, a mole
se cacher (comme un agent secret)​, un initié (dans un gang)​, taupe (infiltré)​
verdeckter Ermittler (S)​