Which of these stories made headlines in 1947? Flying Saucers Seen in Washington, Communism Declared in China, Barbie Doll Makes Debut, or First Corvette Introduced? A civilian pilot named Kenneth Arnold said he saw flying objects that a reporter mistakenly called flying saucers.

下面哪个故事成为了1947年的头条新闻?华盛顿看到飞碟，中国共产主义，芭比娃娃首次亮相，还是第一辆克尔维特?一位名叫肯尼斯·阿诺德的平民飞行员说，他看到了被记者误称为飞碟的飞行物。

For decades, the U.S. military has been studying aerial encounters with unknown objects, aka UFOs. This week the Pentagon released three videos that were recorded during U.S. Navy training flights and they apparently show mysterious airborne objects captured by the planes infrared cameras.

十年来，美国军方一直在研究与不明飞行物的空中接触。本周，五角大楼公布了三段美国海军飞行训练期间拍摄的视频，视频中明显显示了飞机红外摄像机捕捉到的神秘空中物体。

One of the recordings was made in 2004. A pilot who saw that object said it moved rapidly in ways he couldn't explain. The other two clips were captured in 2015 and in one of those a pilot can be heard saying the object is a drone. So was it? The Pentagon says whatever was recorded remains unidentified and it didn't give any hints a???s to what it thinks the objects might have been.

其中一段视频是2004年录制的。一名看到该物体的飞行员说，它以一种他无法解释的方式快速移动。另外两段视频拍摄于2015年，在其中一段视频中，可以听到一名飞行员说该物体是无人机。所以是吗?五角大楼表示，无论记录的是什么，都没有确认，也没有给出任何线索，说明它认为这些物体可能是什么。

The reason the military officially released the videos yesterday after they had been published wi?thout permission by other organizations, was to help clear up public debate over whether the videos were real and if there's any more to them. The military also wants to encourage pilots to report anything strange they see because any unauthorized object in the sky can be dangerous to aviators and U.S. military operations.

这些视频是未经其他组织许可而发布的，军方昨天正式公布这些视频的原因是为了帮助澄清公众对这些视频是否真实以及是否还有其他内容的争论。军方还希望鼓励飞行员报告他们看到的任何奇怪的东西，因为空中任何未经授权的物体都可能对飞行员和美国军事行动造成危险。

Which of these stories made headlines in 1947? Flying Saucers Seen in Washington, Communism Declared in China, Barbie Doll Makes Debut, or First Corvette Introduced? A civilian pilot named Kenneth Arnold said he saw flying objects that a reporter mistakenly called flying saucers.

For decades, the U.S. military has been studying aerial encounters with unknown objects, aka UFOs. This week the Pentagon released three videos that were recorded during U.S. Navy training flights and they apparently show mysterious airborne objects captured by the planes infrared cameras.

One of the recordings was made in 2004. A pilot who saw that object said it moved rapidly in ways he couldn't explain. The other two clips were captured in 2015 and in one of those a pilot can be heard saying the object is a drone. So was it? The Pentagon says whatever was recorded remains unidentified and it didn't give any hints a???s to what it thinks the objects might have been.

The reason the military officially released the videos yesterday after they had been published wi?thout permission by other organizations, was to help clear up public debate over whether the videos were real and if there's any more to them. The military also wants to encourage pilots to report anything strange they see because any unauthorized object in the sky can be dangerous to aviators and U.S. military operations.