point constable

例句：

1. 1. The policeman pointed the way to the nearest exit.
   警察指路到最近的出口。
2. 2. The point constable was responsible for keeping order at the event.
   点名警察负责维持活动秩序。
3. 3.The point constable was the first to arrive and check in with the organizers.
   点名警察是第一个到达并与组织者接洽的人。