plain-clothes

He was arrested by plain-clothes detectives as he walked through the customs hall .

他穿过海关大厅时被便衣侦探逮捕。

I thought we had plain-clothes tracking him .

不是有便衣跟踪他么。

Lebel ordered a plain-clothes detective to check into the hotel .

利贝尔命令一名便衣警探去检查旅馆。

While the testing , by plain-clothes police , is voluntary , any male refusing to take part could come under suspicion .

尽管检测由便衣警察负责且是自愿的，但是任何一位拒绝参与的男子都可能受嫌疑。

They were already having him shadowed by a plain-clothes detective .

他们已经派了一个便衣侦探跟踪他。

A security camera and floodlights appeared outside her front door , supplementing the plain-clothes men who loitered there .

她家门前被安装了一个聚光灯和一个安全摄像头，不断有便衣在她家门口走来晃去。

There were troops with machine guns checking the credentials of officials and reporters , in addition to plain-clothes security officials with more familiar metal detectors .

军人荷枪实弹检查官员和记者是否安全，便衣安全人员也带着金属探测器。

Joe : you might make a mistake , but you 'll have some plain-clothes policemen to take care of you . I doubt you 'll get shot .

乔：呢也许会犯错，不过有便衣警察保护你。我相信你不会被枪击中。

They are unarmed plain-clothes men

.他们是不带武器的便衣警察。

Tourists were free to visit the Songzanlin monastery , near Zhongdian , although the atmosphere was made more tense by the presence of plain-clothes police .

游客可以自由参观中甸附近的松赞林寺，不过，由于有便衣警察，气氛变得更加紧张。

A legion of police and grim , plain-clothes security guards has spread along main thoroughfares and around five-star hotels , providing a glimpse of the challenge Olympics organisers face in delivering a friendly games .

大批警察和表情严肃的便衣保安遍布主干道沿线和五星级酒店周围。北京奥运会组织者要举办一次友好的奥运会，面临的挑战由此可见一斑。