警察的英文：
police
policeman
policewoman

参考例句：

A police blotter.
警察记录本

A squad of police
警察小组

A police district
警察管区

Terrorists gave way to the police.
恐怖分子向警察屈服。

Police quelled the riot.
警察平息了暴动

The prefect of police
(巴黎的)警察总监

the policeman's nightly rounds
警察夜间的例行巡视

Policemen were posted all round the house.
警察在房子周围驻守。

The post mortem is carried out or is conducted by the police pathologist.
由警察病理学家进行的验尸。

The police hustled the thief into their van.
警察把小偷推进了车内。

police是什么意思：
n. 警察部门，警方
v. 巡查；监督，管制
adj. 警察的；有关警察的

The police are on standby.
警察正整装待命。

The police have taken the suspect to the police station.
警察把这个嫌疑犯送到了警察局。

The police have detained two men for questioning at the police station.
警方拘留了两个人在警察局盘问。

policeman是什么意思：
n. （男）警察

The policeman figured the features of the criminal.
这个警察描述了这个罪犯的特征。

a policeman's beat
警察的巡逻路线

The robber was shot dead by the policeman.
那强盗被警察击毙了。

policewoman是什么意思：
n. 女警官,女警察

She was a sort of policewoman-cum-prosecutor.
她可以说是警察兼检察官。

Maybe in a couple of years she'll develop into a police-woman.
可能几年后她会成长为一个女警察。