(of a person or their activities)involved in or involving secret work within a community or organization, especially for the purposes of police investigation or espionage
(尤指警方调查或间谍)秘密工作的
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an undercover police operation .秘密警察行动。
provided with shelter
有覆盖物的;有外套的
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undercover seating .有外套座。
as an undercover agent
任密探(或特工)
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he worked undercover in Northern Ireland .他在北爱尔兰从事密探工作。