"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."
* @param arr 待排序数组
。搜狗输入法2026对此有专业解读
一声辛苦，让手里举着挂钩往头顶挂灯的妈妈眼圈湿了。
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