没有一个官方或非官方人员提能供出撞毁的外星的飞船残骸。
No crashed alien craft have ever been produced by anyone, inside or outside government.
他深深地呼吸着空气。他的鼻孔随着一股外星的气息而张大。
美国航空航天局已经启动了一个为期10年的寻找外星生物的项目。
NASA has started a 10-year search for extraterrestrial intelligence.
真正的威胁会来自于外星智慧生物的发现。
The real threat would come from the discovery of extraterrestrial intelligence.
“我一看到他的照片就没法不想起外星人。”她最近这么写道。
"I can't look at a picture of him without thinking ET," she wrote recently.
但是我们还没有外星访客的证据。
它们看起来，对，像微小的外星人。
除非有友好的外星人能助我们一臂之力。
Unless a friendly alien from an advanced culture helps him out.
真有点像和来自外太空的外星人接触一样！
It would be a bit like being in touch with an alien from outer space!
他也提到了《异形》，一部关于外星怪物的故事，也属于这个类型。
He says Alien, a tale of an extraterrestrial monster, also fits into the category.
我更愿意把它称作外星人的前夕场面。
假设某些外星人一直观察着我们地球的整个历史。
Suppose some aliens had been watching our planet for its entire history.
这些外星人是全能的，尽管不干涉，如果绝对必要的时候，会插手的。
These aliens are all-powerful, and although non-interventionist, are ready to step in if absolutely necessary.
问题是，如果完全无法判明我们所遭遇的外星文明的来访意图，该怎么办？
What if we encounter an alien civilization whose intentions are completely baffling?
有微小的可能性说明这也许是来自于外星智慧。
There is a slight possibility that it just might originate from an extraterrestrial intelligence.
将军相信他们还没看到最后的外星人。
The general believed they had not seen the last of the aliens.
他着眨眼，奇幻的外星景象充斥着他的头脑。
He blinks, the strange hues of the alien vision flooding his brain.
当那些外星人终被找到的时候，希望它们能对我们友好些。
也许外星人实际上是很善良的。
回答这种问题的标准方法着重于寻找外星文明。
The standard approach to answering that question focuses on the search for extraterrestrial intelligence.
有人甚至提出了几乎没有什么证据支持的有关外星人的理论。
Even extraterrestrial-related theories have been proposed with little evidence in support...
霍金谈与外星生命接触的可能性。
Stephen Hawking on the possibility of contact with alien life.
Pillinger教授认为火星是最有可能找到外星生命的地方。
Prof Pillinger argues that Mars is the most likely place to find alien life.
但无论哪种方式，答案就和寻找外星生命本身一样是具有推测性的。
But either way, the answer is as speculative as the search for extraterrestrial life itself.
幻灯片显示：10个最可能发现外星生命的地方。
幻灯片显示：10个最可能发现外星生命的地方。
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