"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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，更多细节参见爱思助手下载最新版本
热闹是真的，但落地比所有人想象的都难。
▲ 图｜Tim’s Guide
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