unidentified caller未经确认的呼叫者;无法辨识来电者
UNIDENTIFIED SUBSCRIBER非识别用户
unidentified principal隐名被代理人
Unidentified Officials不少匿名官员
unidentified gas不明气体
ADJ（形容词） If you describe someone or something as unidentified, you mean that nobody knows who or what they are. 身份不明的; 未知的
He was shot this morning by unidentified intruders at his house.
他今天早晨在家里遭到身份不明的闯入者枪击。
ADJ（形容词） If you use unidentified to describe people, groups, and organizations, you do not want to give their names. 不愿透露姓名的 [journalism]
His claims were based on the comments of anonymous and unidentified sources.
他的主张基于匿名及未知出处的资料的评论。