plain-clothes man

• n. 便衣警察；便衣刑警

英英释义

名词 plainclothesman:

1. a detective who wears civilian clothes on duty

例句

用作名词 (n.)

1. 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。
2. Suddenly, many plain policemen emerged and those robbers started to flee.
   突然间很多便衣警察出现了，这些强盗开始逃跑了。