clench

柯林斯词典

1. V-T/V-I When you clench your fist or your fist clenches, you curl your fingers up tightly, usually because you are very angry. (常指因生气而) 握紧 (拳头)
Alex clenched her fists and gritted her teeth. 亚丽克斯握紧拳头，咬紧牙。
She pulled at his sleeve and he turned on her, fists clenching again before he saw who it was. 她扯了扯他的袖子，他恶汹汹地转过身，在看见她是谁之前又再次握紧了拳头。
2. V-T/V-I When you clench your teeth or they clench, you squeeze your teeth together firmly, usually because you are angry or upset. (常指因生气或不安而) 咬紧 (牙)
Patsy had to clench her jaw to suppress her anger. 帕茜不得不咬紧牙关来压下怒火。
3. V-T If you clench something in your hand or in your teeth, you hold it tightly with your hand or your teeth. 握紧; 咬紧
I clenched the arms of my chair. 我紧紧握住我的椅子扶手。