Hill threw a punch at the police officer.

希尔对警察挥了一拳。

《牛津词典》

The police officer fended off the blows with his riot shield.

警察用防暴盾牌抵挡攻击。

《牛津词典》

The police officer radioed for help.

警察用无线电呼救。

《牛津词典》

The latest fatality in Chechnya occurred Wednesday, when masked gunmen abducted and shot a police officer in the southern Vedeno region.

VOA: standard.2009.03.26

The retarded brother shouted, "Let him have it," whereupon the brother shot and killed the police officer.

发育迟缓的兄弟大喊,"给他一枪",于是他的兄弟开枪射杀了这名警官

耶鲁公开课 - 心理学导论课程节选

The police officer shouts for the brother, the non-retarded brother, to drop the gun.

警官要求智力正常的兄弟,把枪放下

耶鲁公开课 - 心理学导论课程节选

We untangled, and the police officer ran to wrestle the protester, who was arrested.

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Mr Justice Eady said he felt the police officer concerned believed the arrest was necessary.

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And it's a scene in which the police officer is being berated by a citizen.

NPR: Examining Protocol In Disorderly Conduct Cases