Rioting and violent clashes broke out between the protesters and the city's police force.

VOA: special.2009.08.30

By your estimation, how many more years before we will see Afghan National Army and the police force in enough numbers to stablize the country?

根据您的估计，还要多少年,才能有足够的阿富汗国民士兵和警察,来维持这个国家的安定？

普林斯顿公开课 - 国际座谈会课程节选

There is no police force. There are no judges, no juries, so everyone is the judge in his or her own case.

没有警察，没有法官，没有陪审团，所以每个人都是自己的法官。

耶鲁公开课 - 公正课程节选

The Navajo Nation has its own elders, laws,tribal government, and police force that is vigilant at enforcing speed limits.

VOA: standard.2010.03.22

The British don't have a police force until 1827 or 1829, I can't remember which, when Robert Peale creates a London police force which they call the Bobbies, after, like, Robert, Bob, bobbies.

英国在一八二七年才有警力武装,或者是一八二九年,记不清是哪个了,罗伯特·皮尔创建了第一个伦敦警局,叫做博比斯警署,后来,罗伯特·皮尔,博比斯发现

耶鲁公开课 - 欧洲文明课程节选

Paramilitary troops have been activated to bolster the city's police force and new roadblocks are in place to shut down major roads.

VOA: standard.2009.03.14

Eligardo is from the Philippines and is with a United Nations police force of 1,500 that keeps the peace in East Timor.

VOA: standard.2009.08.27

He took some very drastic actions of firing the whole police force and recreating it from scratch.

VOA: standard.2009.09.01

NATO and the Afghan government have agreed to build an army of 134,000 and a police force of 82,000 by the end of 2011.

VOA: standard.2009.03.31

The U.S.has to help Mexico develop its police force, justice system,and courts.

VOA: standard.2010.07.20

Meanwhile,police say at least eleven members of the Central Reserve Police Force died when their vehicle hit a landmine in an area of Chhattisgarh, where Maoists are active.

VOA: standard.2009.06.21

The demonstrators also announced a Freedom of Information lawsuit to force disclosure of the extent of a program called Secure Communities, which partners local police with immigration enforcement in the Department of Homeland Security.

VOA: standard.2010.04.28

"Over the last few months, there have been a number of training centers open that are exclusively for members of both the Afghan National Army and the Afghan national police force, and I would say that drug usage and illiteracy are two of the big problems within the security forces that NATO has really made a big priority now.

VOA: standard.2010.06.23