动词短语
中文翻译：颤抖
同义词：
['quiver', 'shudder', 'quake']
例句：
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1. He trembled at the thought of meeting his old friend again.
他一想到要见到老朋友就感到害怕。
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2. The earthquake caused people to tremble at the ground.
地震使人们感到地面在震动。
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3. She was so scared that she trembled at the sight of the monster.
她非常害怕，看到怪物时都颤抖了。