- 问题详情:TwospacewalkersfixedacameraontheoutsideoftheinternationalspacestationonMondayandthrewoverboardadata–collectingdevice(装置),sendingitrollingoffintospacelikeafootball.Thenewcamerawillhelpspacestationastronautsaddnewpiecesontotheorbiting(轨道)stati...
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