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UFO, how it works? Lets go inside of alien spaceship!

Published on Feb 9, 2016
UFO, how it works? Lets go inside of alien spaceship! Inside of UFO The Oxford English Dictionary defines a UFO as "An unidentified flying object; a 'flying saucer'." The first published book to use the word was authored by Donald E. Keyhoe

UFO，它是如何工作的？让去外星飞船里面！ UFO内幕的牛津字典定义了一个不明飞行物英语为“一个不明飞行物，一个'飞碟'。”使用单词的第一个出版的书是由唐纳德·E Keyhoe撰写