v.抓紧,握紧;咬紧;
例句:
Patsy had to clench her jaw to suppress her anger.
帕奇只得咬紧牙关压住怒气。
His fists clench and unclench in leashed frustration at his impotence.
他的拳头握紧,然后又因为挫败感而松开.
I felt my jaws clench and teeth grind together.
我感到双颚紧闭,牙齿紧紧咬在一起.