“卧底”用英语怎么说

Question

如题所述

Answer 1

翻译如下：
卧底
undercover
例句：
为诱捕史密斯而安插了一名卧底侦探。

planted an undercover detective to trapSmith.

Answer 2

dinting, caunch

Answer 3

卧底，间谍
spy