undercover
🇺🇸
/ˌʌndərˈkʌvər/
🇬🇧
/ˌʌndəˈkʌvə(r)/
adjective
R
Someone does things secretly, often to find information.
The police sent an undercover officer to learn about the gang's plans.
警方派出一名臥底警察來瞭解幫派的計畫。
adverb
R
In a secret way, often to discover information for the police or a government.
They went undercover to catch the criminals in the act.
他們臥底去抓住犯罪分子。
translation
秘密行動的
秘密地