adj.地球(或其大气圈)外的;行星际的
n.外星人
Extraterrestrial life has often become the subject of science fiction films. 科幻片经常以外星生命为主题。
The extraterrestrial would say we all speak dialects of one common language. 这位外星人会觉得,我们都在讲一种语言中的不同方言。