莎娃遭小威吊打

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圣诞节前夕，冰岛一对丧子的牧羊人夫妇，把一个半人半羊的小孩带回家抚养，羊崽给这个家庭带来了欢乐，而未知的恐怖力量正在摧毁他们。。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 ...。