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。
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。
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。
I thought we had plain-clothes tracking him. 不是有便衣跟踪他么。
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。
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。
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。
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。