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San Francisco, CA。关于这个话题，旺商聊官方下载提供了深入分析
Terms & Conditions apply，这一点在爱思助手下载最新版本中也有详细论述
The ISS is far bigger than either the Salyuts or Skylab. In an uncontrolled deorbit, pieces of debris “up to car and train size,” say experts on the official ISS space station advisory committee, will rain down from the sky. NASA confirms this would pose “a significant risk to the public worldwide.”