10 年前
视频简介
灰姑娘白雪公主阿尔卑斯山的少女（上、下） 偷梦人梦幻姐妹睡美人梦之城堡妈妈万岁魔法苹果竹子公主梦幻湖拇指公主幸运的蓝色萤火虫 Kitty和Mimmy的生日外星人到伦敦快乐的化装舞会。NOVA: Mysteries of Sleep Like virtually every other animal, humans need sleep to survive. But why? What do we gain from spending nearly a third of our lives in such a defenseless state? And what's at stake if we sleep poorly? The functions of sleep have long been something of a mystery. But now scientists are peering deep into the brain to see what happens while we snooze. One ...。
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