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楚凡，一个没有斗力的废物，暑假踏青意外进入上古传送阵，来到修仙世界，苟了一千年混成六界圣人，重返地球。修真一千年，地球才一天，当所有人以为楚凡还是个废物的时候，他将开启他掌控万物的故事。。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 ...。