She always wears plain clothes to work.

她总是穿朴素的衣服去上班。

I just wear very plain clothes, generally speaking.

一般来说，我只是穿很朴素的衣服。

He turned away from his dull teachers in their plain clothes.

他冲着没趣儿的老师们一扭身便离开了。

I was working on a bus, we still wear plain clothes on the bus.

我在一辆公共汽车上工作，我们还在车上穿便衣。

At the rendezvous, the pair were approached by plain clothes Carabinieri policeman.

在约定地点，便衣宪兵警察找到了他们。

Police presence will be doubled, and plain clothes officers and video surveillance beefed up.

警方部署将加倍，同时，便衣警察和视频监控的力度也将增加。

I was working on the bus. We used to wear plain clothes on the bus.

照片里的我在公交车上。以前在公交车上我们都穿便服。

Prosecutors say the officer was in plain clothes, never identified himself, and provoked a confrontation.

检方称当时这名警官穿着便服，没有公布身份，并挑起对峙。

But he is a plain clothes official.

但他是便衣官员。

'Oh, the plain clothes and all.

“哦， 便衣什么的。