AI产业链的三层架构：从“卖铲子”到“淘金客”的价值传导要理解上游企业业绩与股价的诡异背离，就需要回到AI产业链的三层架构——一个形象的“淘金热”比喻，能清晰拆解各环节的价值逻辑与生存现状，进而找到这一矛盾的根源。
Tens of millions watched on television as Lovell and two other astronauts splashed back down into the Pacific Ocean, a moment which has become one of the most iconic in the history of space travel.
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locations controlled via leased telephone lines—and those telephone lines were