Clearly, if you are spending more than your income, you'll need to tighten your belt.

很显然，如果你现在花钱就入不敷出，以后就不得不勒紧腰带了。

《柯林斯英汉双解大词典》

While the rest of Europe is forced to tighten its belt, Germany appears to be coasting through the crisis.

在欧洲其他国家被迫勒紧腰带的时候，德国在危机中似乎是毫发无损。

youdao

With this situation the best way to stay out of the crosshairs of the problem is to tighten your financial belt and watch expenses.

在这种情况下，避开麻烦的最好办法是捂紧腰包，谨慎消费。

youdao

If you have less money than usual, you may have to tighten your belt.

VOA: special.2010.05.02

All of that is contributing to the need for people to tighten their belt.

NPR: Financial Expert Examines Possibility of Recession

But the global economic situation has only strengthened his longstanding desire to have F1 tighten its belt.

CNN: Mosley demands F1 cuts costs

In December 1997 the IMF asked South Korea to tighten its belt a notch (a fiscal improvement of 0.4% of GDP).

ECONOMIST: Has the IMF changed? Or has the world?