单词extraterrestrial
n.: 外星人
adj.: 地球外的；外星球的；宇宙的
网络: 来自地球以外的；来自外星的；地球之外的
（故事中的）天外来客，外星人，外星生物:
(in stories) a creature that comes from another planet; a creature that may exist on another planet
地球外的；外星球的；宇宙的:
connected with life existing outside the planet Earth
地球以外的人
外星人;宇航员
外星人,外星球的生物
〔天〕星际
地球外的,行星际的,大气圈外的,宇宙的
复数：extraterrestrials
n.aliencreatureMartianlittle green manadj.celestialinterplanetaryinterstellarotherworldly
n.earthlingadj.terrestrial
Any search for extraterrestrial life relies on Earth-based assumptions, and those the researchers made are at least sound, she said.
她说任何对地外生命的探寻都依赖于以地球为基础的假设，而研究人员所做的这些假设至少是正确的。
"These extremely cold environments are the best analogues of possible extraterrestrial habitats, " she said.
“这些极端寒冷的环境与地球外可能的栖息地极其相似。”她说。
On the question of "external guidance", he does not rule out extraterrestrial help.
至于“遥控指导”的问题，他没有排除外星人的帮助。
The type of wave that would carry an extraterrestrial civilization"s signal would be oriented, or polarized, in one of two ways.
携带地外文明世界信号的那种类型的波可以用两种方法之一来确定其方向或偏振。
It may involve a rather mundane announcement by NASA of the discovery of primitive extraterrestrial life in the form of microbes.
可能是由NASA很正常地来宣布发现了原始外星生物的微生物形式（这个已经间接承认了）；
Scientists think the sun could be the best communication device for contacting intelligent extraterrestrial life.
科学家认为太阳是联系外星生命最好的通讯装置。
But now a pair of researchers believe extraterrestrial life could exist on a rogue planet that has been ejected from its birthplace.
但是现在有两个研究者指出，有可能有地外生物生活在漂浮星系外的星球上，这个星球从它的诞生地开始在宇宙空间中一直流浪。
Meteorites are rocks, usually containing a great deal of extraterrestrial iron, which were once part of planets or large asteroids.
陨石是一种石头，通常含有大量的地外铁物质，这些物质曾经都是行星和大型小行星的一部分。
Meteorites contain a great deal of extraterrestrial iron, even the ones that look like terrestrial rocks (stony meteorites).
陨石包含一个很大的外星铁，即使是那些看起来像陆地岩石（石陨石）。
In Ufology , any extraterrestrial contact initiated by humans is known as a Close Encounter of the Fifth Kind.
在不明飞行物学中，人类与外星任何形式的接触都被称为第五类接触。