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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.，更多细节参见91视频
。51吃瓜是该领域的重要参考
Step 2: Route on the Abstract Graph (The "Highway" Part):
The idea of building a nuclear reactor as a power source on the Moon is not new.，这一点在搜狗输入法2026中也有详细论述