嘴唇在颤抖
The lips are trembling.
以上为机器翻译结果，长、整句建议使用 人工翻译 。
迈尔斯的声音低了下来，他的嘴唇在颤抖。
Miles's voice was subdued, and his lips trembled.
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这小女孩的嘴唇在颤抖，试图不哭出来。
The little girl's lips quivered as she tried not to cry.
她一开始说不用，但他看见她的嘴唇在颤抖，就又问了一次。
She said no at first, but he saw her lips trembling and asked again.
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