近日傍晚，在一处美国安全设施附近，三名联邦特工目睹了一架无法识别的飞行物：一架巨大的“哑光黑色三角形”物体，速度与战斗机相当，毫无声响，随后消失。这是根据联邦调查局和国防部的报告。
On a recent evening near a secure U.S. facility, three federal agents saw a flying object they couldn't identify: a large "matte black triangle" that moved as fast as a fighter jet, made no sound and then disappeared, according to FBI and Defense Department reports. Why it matters:
为何重要：这架15英尺长的飞行三角形被归类为类似UFO的“未识别异常现象”，因为美国没有制造此类飞行器的技术，其对手也没有。
The 15-foot flying triangle is classified as a UFO-like "Unidentified Anomalous Phenomena" because the U.S. doesn't have the technology to make such a craft — and neither do its adversaries.
- 这类类似无人机的飞行器的报告，正日益引起情报和军事官员的关注与担忧。
• The reports of the drone-like aircraft is of growing interest and concern to intelligence and military officials.
最新进展：关于神秘三角形的两份报告，包含在周五由美国官员发布的一批10份文件中。这是根据特朗普总统今年下达的命令，要求尽快披露所有政府来源的未识别异常现象记录。
Driving the news: The two reports about the mysterious triangle were included in a batch of 10 documents released Friday by U.S. officials under President Trump's order this year to disclose UAP records from all government sources as soon as possible.
- 周五的披露是该命令下第七批文件的公开。
• Friday's disclosure marks the seventh release of a tranche of documents under the order.
- 部分在国家档案馆发现的文件可追溯至20世纪40年代。
• Some of the documents found in the National Archives are from the 1940s. Zoom in:
细节：飞行三角形的报告最为引人注目，因为该事件发生在今年，时间非常近。月份和日期已被涂黑。该文件被标记为“未识别空中物体观察报告”，相关报告被归类为“未识别异常现象”报告。
The flying triangle reports are the most intriguing because the incident — from this year — is so recent. The month and day are redacted. The document is labeled an "Unidentified Aerial Object Observation Report" and the 's report on it is classified as a "Unidentified Anomalous Phenomena" report.
- 观察者为联邦特工，其中两人拥有“丰富的作战经验”并熟悉无人机。其中一人携带一台“热成像单筒望远镜”用于红外追踪，却未能探测到神秘飞行器发动机上与推进相关的“离散热源”。
• The observers were federal agents, including two with "extensive operational experience" and familiarity with drones. One had a "thermal monocular" for infrared tracking and yet couldn't detect "discrete heat sources associated with propulsion" from an engine on the mysterious craft.
- 特工报告称，他们看到这架翼展约15英尺的类似无人机的三角形物体，在山脊线上方垂直上升了多达300英尺，过程中没有倾斜或摇晃。它停下，悬停了约20秒，然后以战斗机的速度水平飞行了约1.5英里，耗时三秒，毫无声响，随后消失。
• The agents reported seeing the drone-like triangle, with a wingspan of about 15 feet, rise vertically for as many as 300 feet above a mountain ridgeline without tilting or swaying. It stopped, hovered for about 20 seconds, and then flew horizontally as fast as a fighter jet for about 1.5 miles in three seconds without making a sound before it vanished.
引人入胜之处：周五发布的文件中有一份与飞行物无关。这是一份2010年的解密文件，关于犹他州一处被称为“皮肤行走者牧场”的地产，该名称源自纳瓦霍文化中的超自然变形女巫。
The intrigue: One of the documents released Friday doesn't concern a flying object. It's a declassified 2010 about the Utah property known as the "Skinwalker Ranch," named after supernatural shapeshifting witches in Navajo culture.
- 报告称：“目击者报告称在近距离看到不明光球，白天目睹‘类似狗’的生物用两条腿奔跑，非自然的动物般的嚎叫/尖叫，‘小人’，史前鸟类，以及一条长约8英尺、直径2至3英尺的蛆虫。”
• "Witnesses have reported unidentified balls of light at close range, daytime sightings of "dog-like" creatures running on two legs, unnatural animalistic howling/screaming, 'little people,' prehistoric-like birds and a maggot which measured about 8 feet long and 2- to 3-feet in diameter," the report said.
- 报告作者未提出最终结论，也未提供超自然现象的确凿证据（如照片）。从一团疑似“皮肤行走者”毛发的DNA检测显示，其来自浣熊。
• The report's authors present no final conclusions or hard evidence, such as photographs, of the supernatural. DNA tests from one clump of hair from a suspected "Skinwalker" showed it came from a raccoon.
- 该牧场现为Netflix节目的主题。
• The ranch is now the subject of a Netflix show.
此批文件中的其他项目包括：
Other items in the tranche include:
- 一份1954年瑞典Transair航空飞行员的报告，称他和机组人员目睹了飞碟：“此前我对所有关于神秘物体——被称为飞碟——在各地被目击的故事持极度怀疑态度，”机长说。“现在我确切不知作何感想；但在我看来，我们似乎看到了某种机器人。”
• A 1954 report from a Swedish Transair pilot who said he and his crew witnessed flying saucers: "Previously I have been extremely skeptical about all the stories of mysterious objects — called flying saucers — that have been seen at diverse points," the captain said. "Now I don't know exactly what to think; but it did seem to me that we had seen a robot of some kind."
- 一份1957年B-52飞行员在沙特阿拉伯上空的报告，称他目睹了一架不明飞行器。
• A 1957 report from a B-52 pilot over Saudi Arabia who said he witnessed an unidentified aircraft.
- 1949年和1952年来自加利福尼亚州圣卡塔利娜岛的UFO报告，该岛是美国最早一些“飞碟”目击事件的发生地。
• 1949 and a 1952 UFO reports from California's Catalina Island, site of some of the nation's first "flying saucer" sightings.
- 一份1963年的机构间协调备忘录和1960年代的记录，涉及NASA和国防部将如何处理并公开讨论收集“各类航天器的碎片或疑似碎片”。
• A 1963 interagency coordination memo and 1960s records concerning how NASA and the Defense Department would handle and publicly discuss the collection of "fragments or suspected fragments of space vehicles of all types." Yes, but:
但是：政府发布的记录未表达任何关于政府是否认为UAP代表外星生命存在的结论。
The records released by the administration do not express any conclusions as to whether the government believes the UAPs represent the existence of alien life.
- 它们也不表明UAP是否构成对美国国家安全威胁的任何结论。
• They also don't indicate any conclusions as to whether UAPs represent a national security threat to the U.S.