1、There were policemen in plain clothes in the crowd.
人群中有穿著便衣的警察。

2、Plain clothes policeman who work undercover to detect crime.
隱蔽調(diào)查犯罪的便衣警察。

3、She always wears plain clothes to work.
她總是穿樸素的衣服去上班。

4、Plain clothes are appropriate for school wear.
樸素的衣服適合于上學(xué)時(shí)穿著。

5、He dress in plain clothes and drives an old car. Who would know he is the richest man in town?
他衣著普通，開(kāi)一輛舊車(chē)，誰(shuí)會(huì)想到他是小鎮(zhèn)上最富有的人??？

6、Three officers in plain clothes told me to get out of the car.
三名便衣軍官叫我從車(chē)上下來(lái)。