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After two hapless TV technicians stumble upon a murder scene, every step they take to avoid becoming suspects lands them in deeper trouble.。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 ...。纪录片《嘿，这就是诗经》根据《诗经》文本内容，分为《源流篇》《爱情篇》《修身篇》《农事篇》《战争篇》《礼仪篇》六集，每集30分钟。全片围绕一个主题展开，由4-7个独立小篇章组成，篇章之间既相互独立，又相互关联，结构上“可合可拆”。节目以年轻态、轻松灵秀的方式，诠解《诗经》的前世今生，创新性地普及中华优秀传统文化。。