It's important to tighten up the wheels properly, otherwise they vibrate loose and fall off.

把车轮拧紧很重要，否则它们会振动而松脱。

《柯林斯英汉双解大词典》

Until this week, every attempt to tighten up the law had failed.

到本周为止，一切严格执法的努力都失败了。

《柯林斯英汉双解大词典》

You want to tighten up the kevlar, OK?

你应该穿防弹衣的，好吗？

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So that would mean that the Fed should be raising interest rates to try to tighten up the economy and bring the inflation rate down.

所以，这意味着,美联储应该提升利率,以试图加强经济,并且将通货膨胀率降低。

耶鲁公开课 - 金融市场课程节选

The Congress will also be asked to rubber-stamp moves to tighten up on friendly internationals.

BBC: Fifa to review rules over player nationality

Mexican officials insist that attempts to tighten up their anti-drugs campaign have long been under way.

ECONOMIST: Drugs in the Americas

Holyrood's procedures committee is now looking into proposals to tighten up the rules on corrections.

BBC: MSP 'correction' rules to change