tighten up

US /ˈtaɪtn: ʌp/

UK /ˈtaɪtn ʌp/

A1 初級
phr. v.片語動詞加強
The police decided to tighten up security after the bomb threat.
phr. v.片語動詞繃緊
Tighten up your stomach muscles while doing this exercise.
phr. v.片語動詞收緊
The company needs to tighten up its rules regarding employee conduct.

影片字幕