to tighten
01
拧紧, 握紧
to hold, fasten, or turn something firmly
Transitive: to tighten sth
例子
He used a wrench to tighten the bolts on the machine.
他用扳手拧紧了机器上的螺栓。
02
拧紧, 收紧
to become more firm, secure, or constricted
Intransitive
例子
The knot in the rope gradually tightened as he pulled it, making it more difficult to untie.
当他拉动绳子时，绳结逐渐收紧，使得解开变得更加困难。
03
收紧, 加强
to impose restriction or implementing measures to increase effectiveness
Transitive: to tighten an activity or measure
例子
In an effort to combat cheating, the school administration tightened its examination procedures.
为了打击作弊行为，学校管理部门收紧了考试程序。
