Let’s now imagine that the station is depressurized and, for the first time in decades, empty, operated entirely via computers and remote control. First, NASA and its partners must accept the need to deorbit—there’s no going back to save the ISS. This could be complicated: 23 countries in the European Space Agency, as well as Japan and Canada, are involved in the ISS partnership. And then there’s Russia. The Russians have committed to supporting the ISS only until 2028. But they did agree to help NASA in a contingency deorbit situation.
"He did all his life what he wanted to do to make a difference - he found great pleasure in exposing wrongs," Alan added.
。夫子对此有专业解读
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（四）具有重大科学文化价值的地质剖面、地质构造、古生物化石集中分布区、地貌景观、地质灾变遗迹等自然遗迹；