单词plain-clothes
adj.: 穿便衣的
n.: 便服
网络: 便衣人员
（警察执行任务时穿的）便衣，便服:
ordinary clothes, not uniform, when worn by police officers on duty
adj.out of uniformundercoversecret
This stupid robber actually robbed a plain clothes man in his last robbery! --- it would make sense for him to end up being arrested .
这个傻强盗在最近一次抢劫时，居然抢的是便衣警察---这也就能很好解释为什么他终于被捕了！
After picking up the placards, gradually uniformed and plain-clothes police force, one of whom was a woman, showed up.
在拿起抗议标语之后，制服和便衣警察渐渐的出现，他们其中一位是女性。
Several uniformed and plain-clothes police rushed her, yelling at her to surrender her camera and come with them.
这时几个穿制服的和便衣的警察冲向她，吼着要她交出手机并且要带走她。
Eliza was now very tall and thin, with a rather sour face, dressed in very plain clothes, and with a cross hanging round her neck.
伊丽莎现在又高又瘦，面带苦相，穿着非常简朴，脖子上挂着个十字架。
Three plain clothes security men then flanked my chair and kept nudging me to leave.
一会儿，三名便衣保安围在我座位两侧，轻推我让我离开。
In the new development of the jungle, a winding path, one woman in plain clothes traveled alone and went straight into the woods to a tree.
在新开发的丛林里，一条蜿蜒的小径上，一个衣着素色的女人踽踽独行，径直走向林子里的一棵树。
A policeman in plain clothes shadowed the criminal all day.
有个便衣警察整天秘密监视那个罪犯。
Princess"s disappearance sparked the panic, the king secretly sent a number of plain clothes looking for the whereabouts of the princess.
公主的失踪引起了人们的惊慌，国王秘密派出了许多便衣四处寻找公主的下落。
The next day, two men in plain clothes arrived to pick up Helmut.
第二天，两个身着便衣的人来吧海姆特抓走了。
The nondescript Swiss, on arrival, was to have plain clothes.
那个难以安排的瑞士人到来的时候将穿上便衣。