平台对旅行社的赋能则更具革命性，直接改变了行业的人力资本结构。
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"But you must keep up the exercise regime. Because you're staying fit in space, not for space itself, but for when you return back to the punishing gravity environment of Earth. Those first two or three days back on Earth can be really punishing."
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Singh’s New Yorker article ends by asking what these sorts of searches for common origins tell us: “that our wild, warring species shares something irreducible at its core.”