unidentified flying object

常見例句

In popular culture, the term UFO–or unidentified flying object–refers to a suspected alien spacecraft, although its definition encompasses any unexplained aerial phenomena.
通俗地說，所謂 UFO——或者不明飛行物——指疑似外星人的飛船，不過它的定義也包括無法解釋的空中現(xiàn)象。
Beware the little green men – the number of 'unidentified flying object'(UFO) sightings has more than tripled this year, Ministry of Defence documents reveal. Daily Telegraph.
小心那綠色小人– 國防部文件顯示，今年目睹“不明飛行物體”（UFO）的數(shù)字是去年的三倍多。英國《每日電訊報》。
UFO stands for unidentified flying object.
UFO的意思是不明飛行物。