There are at least 200, 000 official participants, plus thousands of security police.

正式参加国庆活动的人员将超过20万人，另外还有数千名安保警察。

youdao

Every single cowardly strike from the security police was another crack in my wall of fear.

狱警每一次的抽打都证明了他们的恐惧，从而让我的恐惧之墙瓦解。

youdao

Police sources yesterday downplayed the significance of the security breach.

警方昨天的消息对这次安全缺口的重要性轻描淡写。

《柯林斯英汉双解大词典》

The summit meetings also brought thousands of troops and police for security and to control protests.

VOA: special.2009.04.04

I think that part is fine, but behind that you need something to replace what was there When you have peace then you need to bring in stablity that means economic stability as well as security stability You need the police. You need the government. You need the economy.

我认为计划本身是好的，但还需要一些东西来填充以为以前的空缺,和平了，你就需要稳定，经济稳定，安全局势的稳定等,我们需要警察，需要政府，经济也要发展。

普林斯顿公开课 - 国际座谈会课程节选

Most threats to police and security officers come from handguns.

VOA: special.2010.02.09

There are at least 200, 000 official participants, plus thousands of security police.

BBC: Swine flu spread in China 'grim'

Coetzee was central to many secrets of the apartheid era, but in giving him amnesty for his crimes, the Truth Commission found that he had simply been following orders from higher-ranking security police commanders.

BBC: Apartheid death squad boss Dirk Coetzee dies in Pretoria

Given the finite nature of police resources, the mechanisms by which security and police protection is afforded cannot be dictated by the edict of a court or the retrospective conclusions of a jury.

FORBES: Courts Reject WTC Verdict, Smith Barney Case-Without-A-Plaintiff