C2 noun /ˈsɑːrdʒənt ət ɑːrmz/
sergeant-at-arms
警卫员
Meaning
An officer responsible for maintaining order during meetings or legislative sessions.
Example
The sergeant-at-arms escorted the disruptive member out of the hall.
警卫员把扰乱秩序的成员从大厅带了出去。