劍橋詞典abbreviation for unidentified flying object : an object seen in the sky that is thought to be a spacecraft from another planet 不明飛行物，飛碟，幽?。╱nidentified flying object的縮寫） Several UFO sightings have been reported . 已接到了數(shù)起發(fā)現(xiàn)不明飛行物的報告。 返回 UFO