hold the fort
守住阵地；坚守阵地
口语·暂时负责或坚守
英文释义
to be in charge or take responsibility for something while someone is away or unavailable
例句
Can you hold the fort while I go grab lunch?
典故来源
源自军事用语，指士兵坚守堡垒，后引申为暂时负责。