This is the 16933rd most frequent Korean word.
상비군
"상비군" means "standing army" or "regular military force."
Here, 상비군 refers to a 'reserve or backup team' for the sport.
축구 팀의 상비군은 매년 선발됩니다.
The reserve team for soccer is selected every year.
Here, 상비군 is used to mean a 'reserved or standby force' ready for action.
그들은 특정 상황에서 대응할 수 있는 상비군 역할을 맡았습니다.
They took on the role of a reserve force to respond to specific situations.
In this context, 상비군 metaphorically refers to an item kept ready and available for emergency use.