* @param {string} num 非负整数的字符串形式（可能含前导零）
The atmosphere is a ruthless incinerator, and, no matter how the ISS comes down, most of it would be vaporized. But there’s still that chunk of station that could survive reentry. In the best case, where we’re prepared, air traffic controllers and maritime authorities can issue alerts. The station will shed pieces into the sky, and Australians might get a nice view before things kerplunk into the sea. Then the remains of this historic feat of human engineering will sink to the ocean floor, another carcass left to the algae and the microplastics.，详情可参考搜狗输入法下载
。91视频对此有专业解读
And more concept art for the project!。关于这个话题，服务器推荐提供了深入分析
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