un·der·cov·er
adjective/ˌʌndəˈkʌvə(r)/
/ˌʌndərˈkʌvər/
[usually before noun]- working or done secretly in order to find out information for the police, a government, etc.
秘密工作的；暗中做的；私下进行的 - an undercover agent
密探 - an undercover operation/investigation
秘密行动／调查 - The scandal was revealed after months of undercover work by journalists.
经过新闻记者数个月的暗中调查，丑闻被揭露出来。
Oxford Collocations DictionaryUndercover is used with these nouns:- agent
- detective
- mission
- …
- an undercover agent
Wordfinder
- arrest
- charge
- cordon
- detain
- detective
- interrogate
- plain clothes
- police
- raid
- undercover