police sth
作及物动词，后面直接跟表示地点、群体或规范的名词作宾语。
Local officers police the neighborhood every night.
当地警察每晚都在这个街区巡逻维持治安。
监管；强制实行（规范）；在(某群体)中执行法律并维持秩序；对......强制实行规范或标准；通过巡逻维持安全
to keep order and security among a group or in a place by enforcing laws and patrolling
在(某群体)中执行法律并维持秩序
To enforce the law and keep order among (a group).
对......强制实行规范或标准
To enforce norms or standards upon.
通过巡逻维持安全
maintain the security of by carrying out a patrol
一般现在时
The committee polices the use of company funds.
该委员会监督公司资金的使用。
一般过去时
The military policed the capital during the crisis.
危机期间，军队在首都维持秩序。
现在完成时
The agency has policed online content for a decade.
该机构监管网络内容已有十年。
注意：此处为动词用法，指维持秩序、执行规定或监督，而非名词“警察”。
The city hired more officers to police the busy downtown area during the festival.
该市聘请了更多警察在节日期间维持繁忙市中心的治安。
用法提示：此处 police 是及物动词，表示通过巡逻来维护安全。
Our neighborhood association meets once a month to police the new parking rules.
我们的社区协会每月开会一次，以执行新的停车规定。
用法提示：police 在这里作动词，表示强制执行规范或标准。
The committee polices the use of shared tools in the workshop.
委员会监管车间里共用工具的使用情况。
用法提示：polices 是 police 的第三人称单数，在这里表示监督、规范。
作及物动词，后面直接跟表示地点、群体或规范的名词作宾语。
Local officers police the neighborhood every night.
当地警察每晚都在这个街区巡逻维持治安。
常用被动语态，用 by 引出负责维持秩序的人或机构。
The march was policed by hundreds of officers.
这场游行由数百名警察维持秩序。
反身用法，表示某个行业或组织自行监管、约束自身。
The industry polices itself through strict rules.
该行业通过严格的规定进行自我监管。
grammar · medium
易错句子The neighborhood is police by the local officers.
正确表达The neighborhood is policed by the local officers.
被动语态中，动词要用过去分词形式。police 的过去分词是 policed，不能用动词原形 police。
grammar · medium
易错句子The government polices on the new regulations.
正确表达The government polices the new regulations.
police 作动词时是及物动词，后面直接跟宾语，不需要加介词 on。on 是多余的，应去掉。
grammar · medium
易错句子The police polices the city.
正确表达The police police the city.
police 作名词表示“警方”时是复数概念，作主语时谓语动词要用原形（或复数形式），不能用第三人称单数 polices。这里动词 police 的主语是复数，所以用 police。
在街头巡逻维持治安
Hundreds of officers were brought in to police the streets during the summit.
峰会期间调来了数百名警察在街头维持治安。
维持抗议活动的秩序
The government sent in troops to police the protest.
政府派军队去维持抗议活动的秩序。
守卫边境
Extra patrols were assigned to police the border.
增派了巡逻队守卫边境。
监管该行业
A new watchdog was created to police the industry.
设立了新的监管机构来监管该行业。
为活动维持秩序
Officers from three counties helped police the event.
来自三个县的警察协助为这场活动维持秩序。
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监管互联网
It is hard to police the internet without limiting free speech.
要在不限制言论自由的情况下监管互联网很难。