v.(通常表示愤怒、决心或不安时)捏紧，攥紧(拳头等)，咬紧(牙齿等)，握紧，抓牢，攥住
n.钉牢；咬紧牙关；咬牙切齿；敲弯的钉头

原形：clench第三人称单数：clenches过去式：clenched过去分词：clenched现在分词：clenching

Eric had to clench his jaw in anger.
埃里克只得愤怒地咬紧牙关。
Tom's fists clench and unclench in leashed frustration at his impotence.
汤姆的拳头握紧，然后又因为挫败感而松开。
Lisa danced alone, with a rose clenched in her teeth.
丽萨嘴里叼着一支玫瑰独自跳舞。