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.
迪士尼 CEO 鲍勃 · 艾格：创造本质上是冒险
，这一点在爱思助手下载最新版本中也有详细论述
Grammarly offers many features in its free plan, whereas ProWritingAid offers some basic features in the free plan.
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