拧紧

1. 这个螺栓已经坏了，不能拧紧了，但是我还未买来新的之前暂时再用一下。
   The bolt is worn and not an exact fit but it will serve its turn until I can buy a new one.
2. 他拧紧了螺丝。
   He tightened the screws up.
3. 防松螺母常指拧紧在另一个螺母上的防止其松动的细螺母
   A usually thin nut screwed down on another nut to prevent it from loosening.
4. 这螺丝钉需要再拧紧些。
   This screw needs tightening.

紧的英语翻译：