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阿昆长年垄断了海洛因市场，虽视追随8年多的阿力为接班人，但阿昆一向小心行事，从没透露过“货仓”、加工场的位置也未见过其他“同事”。阿昆打算把自己的生意全权交由阿力打理，阿力渐渐知道了更多毒品市场中的秘密。  8年来阿力以卧底的身份搜集毒贩的全部资料，但他对吸毒者阿芬投入了感情，阿芬的景况却令他对自己边缘人的身份感到更加迷惘。  斗志斗勇的过程中，阿力最终取得了阿昆的完全信任，8年来的追踪，也有了终结。。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 ...。