undercover work
美
英 
例句
Perry: Lois. How's the undercover work coming?
露易斯。卧底做得怎么样?
On the other hand, Richard Walsh lacked Jack Bauer's outlaw tattoos - a few gained in undercover work; most part of Jack's personal roadmap.
另一方面,理查德·沃尔什身上没有杰克·鲍尔那些亡命之徒的纹身——其中一些是做卧底时纹上去的,但大部分都是杰克个人生活的记录。
Since 1997 an average of 20 investigations each year had involved undercover work.
自九七年起平均每年有二十宗查案需要卧底人员协助。