谁知道UFO的全称?

unidentified flying object意思是不明飞行物un。i。den。ti。fied flying objectAHD:[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