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单词
sleep-wake cycle
释义
WordReference Random House Unabridged Dictionary of American English © 2024
sleep
′
-wake
′
cy′cle
(slēp
′
wāk
′
),
USA pronunciation
Physiology
the 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:2026/10/1 9:59:17