extraterrestrial相关的词根或词缀是: terr terr

复数： extraterrestrials

Maybe extraterrestrial intelligence always blows itself up .

也许地外智慧生物常常炸毁自己。

Its environment is comparable to conditions on the moons of jupiter , which are among the candidates for extraterrestrial life .

湖水的生态环境类似于木星的一颗卫星，而这颗卫星是可能承载地外声明的众多备选之一。

Moreover , a host of new technologies will be required , including more-powerful solar panels , electric-ion engines , extraterrestrial mining equipment and robotic refineries .

此外，还需要使用大量新技术，包括更高效的太阳能板、电离子引擎、地外开采设备以及自动精炼工厂。

The expense and enormity of interstellar travel might compel extraterrestrial civilizations to say home and instead transmit images and information about their biology in the hopes of finding interstellar pen pals .

星际旅行的巨大开销，将使得地外文明探索计划代之以传送他们生态的图像及信息，以期发现另外一个星际文明。

Researchers from the max planck institute for extraterrestrial physics used two telescopes operated by the european southern observatory in chile to watch stars as they circled the centre of the milky way .

来自马克斯普朗克地外物理研究所的科学家们，用设在智利的欧洲南部天文台观察那些环绕银河系中心运行的行星。