美澳场 -- 主题演讲：赴冬奥之约，看北京未来之变 Americas & Pacific Region -- Keynote Speech - Beijing Winter Olympics, a Glimpse into the Future of Beijing - 旅游微讲堂Live

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美澳场 -- 主题演讲：赴冬奥之约，看北京未来之变 Americas & Pacific Region -- Keynote Speech - Beijing Winter Olympics, a Glimpse into the Future of Beijing

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