a plainclothes detective,a plainclothes policeman,plainclothes policeman是什么意思

用法例句

The Themes of Times and Police Images in the TV Play Series of Plainclothes Police;

电视连续剧《便衣警察》的时代主题和警察形象

On the strengthening of the plain-clothes investigation;

浅谈便衣侦查工作的强化

In the early years of new China,the plain-clothes team should not only pay attention to the thoughts,strengthen the organization,but also improve the skills.

便衣队在建设初期,既要思想重视、强化组织,更要提升技能、凸显威力。