v. make tight or tighter
v. become tight or tighter
vt. 勒紧, 使变紧
vi. 变紧, 绷紧
1. Please tighten the screws on the chair so it doesn't wobble.
请把椅子的螺丝拧紧，这样它就不会晃动了。
2. She needs to tighten her schedule to fit in more study time.
她需要调整日程以便腾出更多的学习时间。
3. The coach told the team to tighten their defense in the second half of the game.
教练告诉球队在比赛下半场要加强防守。