adj.不能辨认的;来路[身分]不明的;未经确认的;
例句:
We have an unidentified craft approaching the island at high speed.
一个身份不明的物体正以高速接近我们.
An unidentified man was spotted near the scene of the crime.
有人在犯罪现场附近看到一名身份不明的男子。
An unidentified flying object hung high in the sky.
一个不明飞行物高悬空中.