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1947年6月24日,美国曝出民航机驾驶员兼爱荷华州波夕市一家消防设备公司老板肯尼思·阿诺德驾机遭遇9个碟状飞行物的新闻,开创了人类探索飞碟的新时代,它也是美国空军“蓝皮书”计划研究UFO事件的开端一案,是无法解释的5%案例中的
On June 24, 1947, Kennedy Arnold, the pilot of a U.S. civil aircraft exposed by a U.S. company and owner of a firefighting equipment company in the city of Paulus, Iowa, was hit by news of nine disk-shaped flying objects and created a human exploration UFO In the new era, it is also the beginning of the U.S. Air Force Blue Book’s plan to study the UFO incident, which is unexplained in the case of 5%