police staff的用法和样例：
例句
- A fine working mechanism must be achieved in order to construct high quality police ranks.
摘要建设高素质的公安队伍，必须要有一个好的工作机制。 - At present, the environment of the enforcement is becoming much worse, which is disadvantageous to beat the assaulting police.
有警察装备差，抗暴力和成慑力弱，民警自我保护能力不强，公安机关依法维护合法权益的举措软弱无力，公安队伍整体素质仍需提高等主观因素。
