tighten belt
节衣缩食；过紧日子
口语·表达节省开支
英文释义
to reduce or cut back on spending; to live more frugally
例句
We've been spending too much lately, so we need to tighten belt and save for our vacation.
典故来源
源自20世纪初经济困难时期，人们通过勒紧腰带减少饥饿感，比喻减少开支。