在这个经典的21世纪西方电影里,两国交界边境的治安警察与恶毒的墨西哥贩毒集团斗智斗勇。这部以人物为主导的电影以前所未有的方式引发了人们对目无法纪,法律秩序的崩溃以及是否应该以暴制暴这些问题的深度思考。。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 ...。