| 释义 |
tightentight·en /ˈtaɪtn / verb [intransitive, transitive] - tighten (sth) (up) to become tighter; to make something tighter（使）变紧◆His grip on her arm tightened.他把她的胳膊抓得更紧了。◆He tightened the screws as far as they would go.他把螺丝拧到不能再紧了。
- tighten sth (up) | tighten up (on sth) to become more strict or to cause something to become more strict使变得更加严格◆to tighten up the law on the sale of alcohol to minors收紧向未成年人售酒的有关法律
 ●tighten your belt (informal) to start making more careful choices about spending your money勒紧裤带省吃俭用 |