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事件回放哥伦比亚号航天飞机上,7位宇航员完成了例行任务、准备返回地球。航天地面指挥中心预测返航会很顺利。然而,就在着陆前
Event playback Onboard the space shuttle Columbia, seven astronauts completed a routine mission to return to Earth. Aerospace Ground Command Center is expected to return smoothly. However, just before landing