名词
中文翻译：睡眠状态
同义词：
['somnambulism', 'somnolence', 'hypnagogic state']
例句：
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1. The patient fellinto a deep sleep during the operation.
患者在手术期间陷入了深度睡眠。
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2. The doctor advised him to take a nap after his long day's work.
医生建议他在长时间的工作后小睡一会儿。
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3. She was in a deep hypnagogic state when she fell asleep.
她陷入深深的催眠状态时睡着了。