poor as a church mouse
非常贫穷，一贫如洗
口语·形容极度贫穷
英文释义
to be extremely poor or have no money
例句
After losing his job, he was as poor as a church mouse.
典故来源
教堂老鼠因无食物储存而极度贫穷，比喻一贫如洗，源自中世纪欧洲教堂环境。