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A U.S. government report on UFOs said Friday it found no evidence of aliens, but acknowledged 143 reports of "unidentified aerial phenomena" since 2004 that could not be explained. Some of the most intriguing cases come from Navy pilots who reported seeing UFOs — and filming some of them — off the East Coast of the U.S. over a period of months in 2014 and 2015. The pilots, including some who have spoken publicly, say the mystery objects moved with exceptional speed, agility and acceleration that they had never seen before.

周五，美国政府一份关于UFO的报告说没有发现外星人的证据，但承认了自2004年以来的143起无法解释的“不明飞行现象”报告。一些最耐人寻味的案例来自海军飞行员，他们报告说在2014年和2015年的几个月里，在美国东海岸附近看到了UFO——并拍摄了其中的一些。这些飞行员，包括一些已经公开发言的人，说这些神秘的物体以他们以前从未见过的特殊速度、敏捷性和加速度移动。