| 释义 |
tighten up
tighten (sth) up — phrasal verb with tighten /ˈtaɪ.tən/ verb [I or T]
► F0 to make a rule, system, or law stronger and more difficult to avoid or ignore: » Are there any plans to tighten up on advertising controls?Thesaurus+: ↑Becoming and making stronger |