名词
中文翻译：Unknown
同义词：
['1. concussion', '2.impact', '3. shock']
例句：
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1. He suffered a concussion after the car accident.
他在车祸后遭受了脑震荡。
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2. The impact of the fall caused him to lose consciousness.
摔倒的冲击使他失去了意识。
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3. She was in shock when she heard the news.
她听到这个消息时感到震惊。