He saw Mr Malfoy's white hands clench and unclench.

他看见马尔福苍白的双手攥成拳头，随即又松。

Scarlett's eyes began to snap fire and her hands to clench and unclench.

思嘉听到这话，顿时两眼冒火，两只手不停地攥拳头。

She struggled for self-control, and I saw her hands clench and unclench spasmodically. It was dreadfully painful.

她拼命克制自己的感情，我注意到她的两手一会儿握紧，一会儿又松。那种痛苦简直太可怕。

Do you want to unclench your fist, please? Thank you.

请松你的拳头好吗？谢谢你。

" Give'em a lifelong siesta, I would, " snarled Uncle Vernon over the end of the news-readers sentence, but no matter: outside in the flowerbed, Harry's stomach seemed to unclench.

“要是我，就让他们终身享受午睡。”新闻广播员的话音刚落，弗农姨父就恶狠狠地吼道，但是没关系，外面花坛里的哈利心里一块石头已经落地。