clenching例句

She pulled at his sleeve and he turned on her, fists clenching again before he saw who it was.
她拉了拉他的袖子，他双拳再次握紧，气冲冲地转过身来，这才发现是她。

I'll never get used to them, she thought, clenching her fists.
我永远也看不惯这些家伙,她握紧双拳, 心里想.

Clenching her lips, she nodded.
她紧闭着嘴唇, 点点头.