您要查找的是不是：
- A policeman detects criminals. 警察侦察出罪犯。
- Mr.Green dressed up as a policeman in dark glasses. 格林先生伪装成一名戴墨镜的警察。
- If you lose your way, ask a policeman. 如果你迷了路，就去问警察。
- 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。
- A policeman took the old man who had strayed home. 一位警察把迷失在外的老汉送回了家。
- A policeman kept guard over the prisoners. 一名警察看守囚犯。
- A policeman is a limb of the law. 警察是执法人员。
- A policeman was killed when his booby-trapped car blew up. 警察被藏在他汽车里的炸弹炸死了。
- By a happy chance a policeman was passing as I was attacked. 在我受到攻击时，幸好有个警察经过。
- A policeman could meet danger any minute of his working day. 警察在值勤时随时都可能碰到危险。
- A policeman flagged down the car with his flash light. 警察挥动闪光灯让那辆车停下。
- A policeman has the power to arrest a criminal. 警察有权逮捕罪犯。
- A policeman take the old man who have stray home. 一位警察把迷失在外的老汉送回了家。
- He saw a policeman coming and ducked behind a car. 他看到一个警察向他走来，便闪身躲在一辆汽车后边。
- A policeman took the old man home who had strayed. 一位警察把迷失在外的老汉送回了家。
- Every hour a policeman patrolled our street. 每隔一小时就有一名警察在我们这条街上巡逻。
- The thief disguised himself as a policeman. 那贼乔装打扮成警察。
- I aim to be a policeman when I leave school. 我打算中学毕业以后当警察。
- He plans to disguise himself as a policeman. 他打算把自己假扮成一个警察。
- One day, a policeman came to his house. 有一天,一个警察来到了他家。
