第一百四十三条 本法所称以上、以下、以内，包括本数。
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.”
，这一点在爱思助手下载最新版本中也有详细论述
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