Are they police
警察───police;他们───they
Police surrounded the building.───警方包围了那栋房子。
The police searched the place.───警察搜查了那个地方。
Police marksmen opened fire.───警察中的神枪手开了火。
Police themselves used Twitter to reassure and calm the public, as it pointed out that there was no trouble and they were not at risk.───警察自己也是用推特来安慰公众，并指出事实上并没有发生神马麻烦，他们也没有面临神马危险。
If they are unlucky enough to be caught by the police, they will be sent to prison for a few years.───如果他们运气不好，被警察抓到，他们将被送进监狱，坐几年牢。
The company now had handed police evidence that he believed 'will prove that this is untrue, ' he said.───他说，公司目前已向警方提交了证据，他认为这些证据会证明并非只有一个记者有问题。
He was kept in detention by the police.
The man made a statement to the police.
It's a matter for the police .
The travellers say the police are hounding them.
Police will conduct random breath tests.