不明飞行物

There is no doubt that UFOs (Unidentified Flying Objects) exist - many people see things in the skies that they cannot identify, ranging from aircraft to meteors. Whether or not any of those objects and lights are alien spacecraft is another matter entirely; given the fantastic distances and effort involved in just getting to Earth from across the universe, such a scenario seems unlikely. Still, while careful investigation has revealed known causes for most sighting reports, some UFO incidents will always remain unexplained.

UFO（不明飞行物）的存在是毫无疑问的，因为有许多人在天上看到过自己无法识别的东西，从飞行器到流行应有尽有。至于说这些物体和光影当中有没有外星人的宇宙飞船就完全是另外一回事了——但是想想穿越宇宙空间来到地球的遥远距离与巨大困难，你就会觉得这样的事情不太可能。但是，尽管大多数目击报告已经借由认真的调查得到了平平无奇的解释，有些不明飞行物事件还是会一直神秘下去。