tightens; tightened; tightening
tightens; tightened; tightening
Learner's definition of TIGHTEN
: to make (something) tight or tighter or to become tight or tighter使变紧;使绷紧;变得(更)紧 [+ object]
[no object]
tighten the noose
— see noose
tighten the screws
— see 1screw
tighten up
[phrasal verb] tighten up or tighten (something) up or tighten up (something)
: to become more strict or effective or to make (something) more strict or effective(使)变得更严格,变得更有效 -
Security around the building has tightened up recently.最近,大楼周围的安全措施加强了。
-
They tightened up security around the building.他们加强了大楼周围的安全措施。
-
We installed new machines to tighten up the assembly line.我们安装了新机器以提高装配线的工效。
tighten your belt
— see 1belt