英 /pəˈliːs/，美 /pəˈliːs/
警察部门；警方：指负责维护公共秩序、执行法律的官方机构。例如：The police are investigating the case.（警方正在调查此案。）
警察（总称）：用作复数，表示警察群体，不能直接与不定冠词 "a" 连用，若表示单个警察，需用 "a police officer" 或 "a policeman/policewoman"。例如：One hundred armed police were stationed around the building.（大楼四周驻守着100位武装警察。）
维持治安；巡查：指警察或军队等对特定区域进行巡逻、维持秩序。例如：The border will be policed by UN officials.（边境将由联合国官员巡查。）
监督；管制：指某机构对特定领域进行监管。例如：The profession is policed by its own regulatory body.（这个行业由其自律机构监督。）
警察的；有关警察的：用于修饰与警察相关的事物。例如：Jeff let his nephew try on his police helmet.（杰夫让外甥试戴了自己的警用头盔。）
动词第三人称单数：polices
动词过去式/过去分词：policed
动词现在分词：policing
名词复数：police（本身为集合名词，形式不变）
| 短语 | 含义 | 示例 |
|---|---|---|
| go to the police | 报警，报案 | If you see a crime, you should go to the police immediately. |
| police officer | 警察；警官 | A police officer arrived at the scene within five minutes. |
| police station | 警察局；派出所 | He was taken to the police station for questioning. |
| police car | 警车 | An unmarked police car followed the suspect. |
| secret police | 秘密警察 | The novel describes the horrors of living under a secret police regime. |
| police investigation | 警方调查 | The police investigation lasted for three months. |
| police chief | 警察局长 | The police chief held a press conference about the case. |
| police dog | 警犬 | The police dog sniffed out the drugs hidden in the car. |
The Chief of Police stoutly denied the accusation.（警察局长坚决否认这个指控。）
It's the duty of the police to preserve the public order.（维护公共秩序是警察的职责。）
Police were called in to break up the meeting.（出动了警察将集会驱散。）
The police tricked him into making a confession.（警察哄骗他作了招认。）
The robbers escaped before the police arrived.（强盗们在警察到来之前逃走了。）
A man is helping the police with their enquiries.（有一男子在协助警方进行调查。）
The police found the lost treasure in an abandoned well.（警察在一口废弃的井里找到了丢失的财宝。）
The new laws empower the police to stop anybody in the street.（新法令授予警察可以在街上截停任何人的权利。）
She gave the police a full account of the incident.（她把事件向警方作了详细叙述。）
Police sealed off the street.（警察封锁了街道。）
在使用 "police" 时，需注意其作为集合名词的特性，作主语时谓语动词用复数形式。同时，它在不同语境下可表示机构、群体或进行相关动作，掌握这些用法有助于准确运用该词汇。