tighten up

US /ˈtaɪ.tən ʌp/
UK /ˈtaɪ.tən ʌp/
"tighten up" picture
1.

擰緊, 收緊

to make something tighter or more secure

:
Please tighten up the screws on this chair.
請把這把椅子的螺絲擰緊
The regulations need to be tightened up to prevent fraud.
需要收緊法規以防止欺詐。
2.

加強, 改進

to become more disciplined or efficient

:
The team needs to tighten up their defense.
球隊需要加強防守。
We need to tighten up our spending habits.
我們需要收緊我們的消費習慣。