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单词 sleep-wake cycle
释义

WordReference Random House Unabridged Dictionary of American English © 2024
sleep-wake cy′cle  (slēpwāk),USA pronunciation 
  1. Physiologythe species-specific biological pattern of alternating sleep and wakefulness, in humans roughly 8 hours of nocturnal sleep and 16 hours of daytime activity.

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更新时间:2024/9/21 16:22:30