Michael returned to Silicon Valley where, following a brief run at social media analytics company Klout, he joined Uber in 2013 as chief business officer and a close lieutenant to CEO Travis Kalanick. Over the next four years, he helped orchestrate one of the most aggressive expansions in corporate history, in which Uber raised nearly $15 billion and saw its valuation soar to roughly $70 billion.
三观包括：世界观、人生观、价值观。世界观是人们对世界的理解和认知，解决“世界的本质和规律是什么”这一问题，人生观是指对人生的看法，解决“我为什么活着”这一问题，价值观是指判断事情对错的标准，解决了“如何判断善恶”这一问题。
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Фото: Amir Cohen / Reuters。heLLoword翻译官方下载是该领域的重要参考
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