| 释义 |
●ˌtighten ˈup●ˌtighten sth ˈup1. to become or to make sth tight or tighter （使）变紧，变得更牢固◆His face muscles tightened up in anger.
他生气地紧绷着脸。◆to tighten up a screw / wheel / muscle
旋紧螺钉／拧紧轮子／绷紧肌肉 NOTE Tighten and tighten sth can also be used on their own with this meaning. * tighten 和 tighten sth 单独使用也作此义。2. to become more careful or strict about sth; to make sth more strict 变得更仔细（或严格）；使更严格◆Laws on gambling have tightened up recently.
有关赌博的法律最近变得更加严厉。◆The police are tightening up on drink-driving.
警方正在采取更加严厉的措施对付酒驾。◆to tighten up laws / rules / legislation / security
加强法律／规定／法规／安全措施[v + adv] [v + adv + n] [v + pron + adv] [v + n + adv] (less frequent) |