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美国私营公司太空探索技术公司的“猎鹰”9火箭6月4日在卡纳维拉尔角空军站进行了首次发射,将一艘货运飞船的试验样船送入250公里的预定轨道。这
The Falcon 9 rocket of the U.S. privately owned space exploration technology company was first launched at Cape Canaveral Air Force Station on June 4 and a test ship of a cargo spacecraft was delivered to a scheduled orbit of 250 kilometers . This