unidentified flying object
意思是不明飞行物
un.i.den.ti.fied flying object
AHD:[¾n”º-dµn“t…-fºd”]
D.J.[7(nai6dent*7faid]
K.K.[7(na!6dWnt*7fa!d]
n.（名词）
A flying or apparently flying object of an unknown nature, especially one suspected to have been sent by extraterrestrial beings.
不明飞行物：一个未知性质的飞行或似在飞行的物体,尤指被怀疑由外星人派来的
A flying saucer.
飞碟
UFO,英文全称Unidentified Flying Object,不明飞行物,亦即未经查明来历的空中飞行物.国际上通称UFO,俗称飞碟.据目击者报告,其外形多呈圆盘状（碟状）、球状和雪茄状,在空中高速或缓慢移动.