guardroom

名词 guardroom:

1. a cell in which soldiers under guard are confined
2. a room used by soldiers on guard

guard.room

n.（名词）
A room used by guards on duty.
卫兵室：卫兵值勤时所用的房子
A room in which military prisoners are confined.
军中禁闭室：关押军事犯人的房间