So far there is no proof that UFOs or spaceships from other planets do exist.
究竟有没有不明飞行物或来自其他行星的宇宙飞船，迄今为止尚无法证实。
The Pentagon does not comment on UFOs, except to say they do not exist and that such objects really are high altitude balloons or military aircraft.
五角大楼除了说不明飞行物不存在、所谓的不明飞行物实际上是 高空气球或军用 飞机外，没有对不明飞行物作更多评论。
应用推荐