勒紧

If food is scarce it's no use complaining; we shall just have to pull in our belts.

如果食物短缺, 抱怨也没有, 们只能勒裤腰带。

We’ll have to tighten our belts if we want to save any money for our holidays this year.

们要想攒点钱今年去度假，就得勒腰带。