...an undercover operation designed to catch drug smugglers.
…一次为抓捕毒品走私贩而策划的秘密行动。
...undercover FBI agents.
…联邦调查局的密探。
Swanson persuaded Hubley to work undercover to capture the killer.
斯旺森说服了赫布利秘密工作以捕获凶手。
See also: cover
See also: under cover
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