extraterrestrial origin

基本解释

Are UFO's real?Are these things of extraterrestrial origin?
UFO是真的吗?那些东西是源自外星人吗?。
The array's 20-foot-wide telescopes, spread across several acres, don't send messages into space but scan the cosmos for signals of extraterrestrial origin.
这个20英尺射电望远镜阵列，分布在几英亩的区域上。它们并不向太空发射信号，而是扫描宇宙搜寻地外的信号源。
Typically, witnesses who take the trouble to report a sighting consider the object to be of extraterrestrial origin or possibly a military craft but certainly under intelligent control.
通常，不辞辛劳前来报告的目击者认为那些东西是来自地外的，或者可能是超越常识的军事飞机。