ET是英文Extraterrestrial的縮寫，ET的中文意思是外星人。 extraterrestrial noun. （故事中的）天外來客，外星人，外星生物(in stories) a creature that comes from another planet; a creature that may exist on another planet. adj. 地球外的；外星球的；宇宙的 connected with life existing outside the planet Earth.