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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 ...。两位壮汉刑警在调查一起银行劫案时，发现犯罪分子居然个个刀枪不入。根据线索，他们找到一家公司，似乎最近的很多案件都和这家公司的一个秘密实验室有关。 后来，此两位硬汉在与犯罪分子的斗争中不幸相继殉职，但这恰好给他们创造了机会——两个人亦成为试验品，他们的尸体即将被一个怀揣着极大阴谋的邪恶博士所利用……然而，哼哼，英勇的人民公安是不会向犯罪集团低头的，you can't keep a good cop dead！。