基本解释v.实行紧缩政策；勒紧裤带同根派生 英汉例句用作动词 (v.)I have to tighten my belt this month!这个月我不得不勒紧裤带过日子！Because of unemployment many people had to tighten their belts.由于失业，许多人不得不勒紧裤带生活。