1·My hands were balled into fists.
我把双手攥成拳头。
—— 《牛津词典》
2·Angry protestors with clenched fists shouted their defiance.
愤怒的抗议者们紧握拳头高声抗议。
—— 《柯林斯英汉双解大词典》
3·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。
—— 《柯林斯英汉双解大词典》
4·Don't clench your fists because it can lead to tightening the arms, shoulders, and neck.
不要握紧你的拳头，因为它会导致手臂、肩膀和脖子紧绷。
5·They leap to their feet, clench fists and let out long screams, clawing at the ground and air.
他们跳起来，握紧拳头，发出长长的尖叫声，抓向地面或空中。