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For this story, WIRED reviewed dozens of NASA documents, including backup plans and contingencies for emergencies, and spoke to more than a dozen people, including three astronauts who’ve visited the ISS, and no one seemed that freaked out. One astronaut said the most worrisome scenario that actively crossed his mind in orbit was getting a toothache. The ISS has had some emergencies, including a first-ever medical evacuation in January, but generally things have been remarkably stable. In fact, one of the most impressive things about the ISS is that nothing very dramatic has ever happened to it. No experiment has gone too haywire. It hasn’t been hit by an asteroid.
。雷电模拟器官方版本下载是该领域的重要参考
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We have picked out six that have never been on display. You can see where they were found on the HS2 route map below - then scroll further down to see the objects and read about their history.
这些年，越来越多普通人开始了文学写作。这本是人类精神表达的原生渴求，但大多数人往往止步途中。从“欲写”到“落笔”，需要克服惰性；从“完篇”到“臻善”，更是一场艰难跋涉。