3 年前
视频简介
当17岁的玛迪·安德鲁斯发现她看似完美的新继姐妹却有险恶的阴暗面时，她必须找到一种方法来保护自己和母亲，否则就有可能成为一长串受害者中的最新一个。。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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