1. Bush allowed the escape of a convicted terrorist from prison to go to work for him as an undercover CIA asset in Iran-Contra. 布什把一名恐怖分子罪犯从监狱放出来，并让他在伊朗反政府组织里为CIA从事秘密工作。
2. Plain clothes policeman who work undercover to detect crime. 隐蔽调查犯罪的便衣警察。-------[光年网原创。
3. Enhance clients' work skills through simulated work tasks, and facilitate clients' return to work through Functional or Work Capacity Evaluation, work hardening and work resettlement service. 透过工作能力评估、工作强化计划及工作重置服务，协助病者重返就业。
4. But that the dread of something after death - The undercover'd country, from whose bourn no traveller returns - puzzles the will. 倘不是因为惧怕不可知的死后，惧怕那从来不曾有一个旅人回来过的神秘之国。
5. Jasmine Caldwell was 14 and selling sex on the streets when an opportunity arose to escape her pimp: an undercover policeman picked her up. 14岁的茉莉花正在街头卖淫，忽然逃脱的机会来了：她被一便衣警察抓住了。
网络释义
World's Most Astounding Undercover Stings 秘密行动;
Undercover Boss 卧底老板;
卧底老闆;
UNDERCOVER COPS 暴力刑警;
escaped the huge undercover dragnet 避过大量便衣警员的搜捕行动;
