There are many explanations for why UFOs visit the Earth.
对于不明飞行物为何造访地球有许多解释。
The UFOs, it is believed, must contain scientists from other planets who are studying life on earth.
人们相信，这些不明飞行物中一定有来自其他星球的科学家，他们正在研究地球上的生命。
These include UFOs as well as sightings and encounters with "nonhuman creatures" such as Bigfoot and the Loch Ness monster.
这些现象包括不明飞行物，以及目击和遭遇的“非人类生物”，如大脚怪和尼斯湖水怪。
Do you believe it all in real life: the aliens, people from outer space, UFOs, government conspiracies, all the things that the TV series deal with?
在现实生活中，你会完全相信电视剧里讲的所有事情吗？比如说外星人、来自外太空的人、不明飞行物以及政府阴谋。
Although some sightings of UFOs are difficult to explain, most can be explained quite easily.
虽然有些目击 UFO的现象很难解释，但大多数都可以很容易地解释。
I'm not sure if there are UFOs.
我不能肯定是否有不明飞行物。
Topic 2 Are you sure there are UFOs?
话题2你确定有不明飞行物吗？
Two UFOs playfully chase him and swoop through the air around him.
两个不明飞行物玩耍似的追逐着他，时而在他周围的空气中进行俯冲。
He met us after a dinner because he wanted to talk about UFOs.
他在晚宴后接见我们，因为他想和我们聊一聊不明飞行物的事情。
UFOs reports were most likely to be misidentified street lamps.
大多数情况都是市民误把街灯之类的认做UFO。
I don't believe in UFOs or that the world is going to end in 2012.
我不相信U FO，或者世界会在2012年毁灭。
I've never seen anything that makes me think UFOs are alien in origin.
我从没见过什么东西能让我认为U FO是来自外星文明。
Friedman believes that the real truth about UFOs will be revealed soon.
弗里德曼认为，有关U FO的真相将很快地被揭露。
In 1952, the US Air Force began Project Blue Book, a study program on UFOs.
1952年，美国空军开始着手实施“蓝皮书计划”，这是一项针对不明飞行物的研究项目。
There's nothing odd about that; many people believe in UFOs and aliens.
没有什么稀奇，许多人相信UFO(飞碟)和外星人。
Sometimes likened to UFOs, lenticular clouds are usually created by gravity waves.
透镜状云彩很像UFO，它通常由引力波造成。
But this is no solo. Two UFOs playfully chase him and swoop through the air around him.
然而这并非独舞：两个“不明飞行物”欢快地追随着这位舞者，在他身边上下翻飞。
As you lie on your own death-bed you will be as mystified about UFOs as you are today.
当你躺在你自己临终的床上的时候，你仍将被不明飞行物所迷惑，就像你的今天被迷惑一模一样。
In the Soviet Union, sightings of UFOs were often prompted by tests of secret military rockets.
在苏联，U FO目击常常被认为是秘密的军事火箭测试。
The Belgian Air Force scrambling F-16 fighters to intercept UFOs reported by police officers and others.
比利时空军紧急起飞f - 16战斗机拦截不明飞行物，由多名警官和其他人报告。
The Obervatory said, it is not first time UFOs have been reported or even Photographed during intense storms.
天文台说，这已经不是头一回在强风暴天气发生的时候，有市民看到UFO甚至拍下UFO的照片了。
The 2,000 UFOs are spotted every year in the United States represent just 0.0002 sightings per square kilometer.
而美国每年的2000宗飞碟目击事件平均到每平方公里只有0.0002起。
He told us that the RAF (Royal Air Force) had stopped sending fighters after UFOs because some of them didn't come back.
他告诉我，英国皇家空军后来已不再派出战机去拦截不明飞行物，因为许多战机都一去无回。
It's why a camera artifact might look like a base station on Mars, or ice floes look like crashed UFOs to some folks.
这就是为什么有些人会把相机等人工制品看作可能是火星上的基站，或把冰川看作坠毁的飞碟。
Sergio: I used to watch the X-Files with FBI agents MULDER and SCULLY. They taught me a lot about UFOs and the paranormal.
塞吉奥：我过去总看《X -档案》，它里边的联邦调查局特工马尔德和斯古利教了我大量的UFO和特异功能的知识。
"Contact events," such as abductions, are often associated with UFOs because they are ascribed to extraterrestrial visitors.
“接触事件”，例如绑架，经常和UF O关联起来，因为他们被归结为地外访客。
Statistics released by the National Archives this August would suggest the silver screen is not the only place we are seeing UFOs.
国家档案馆8月份发布的数据表明，我们并非只能在银幕上看到U FO。
Statistics released by the National Archives this August would suggest the silver screen is not the only place we are seeing UFOs.
国家档案馆8月份发布的数据表明，我们并非只能在银幕上看到U FO。
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