identity       
noun [ C or U ] uk/aɪˈden.tə.ti/ us/aɪˈden.t̬ə.t̬i/
B2 身份;本身;特性
who a person is, or the qualities of a person or group that make them different from others
  The man's identity was being kept secret while he was helping police with enquiries. 这个男子在协助警方调查时,他的身份是保密的。 
 I cannot reveal the identity of my source. 我不能透露我的消息来源。 
 The informant was given a new identity (= a different name and new official documents) for protection. 给了线人一个新身份以作保护。 
 The newspaper photo apparently showed him in Rome but it was a case of mistaken identity (= it was the wrong person). 报纸上的照片似乎显示他在罗马,但其实那个人不是他。 
 In prison people often suffer from a loss of identity. 在狱中人们经常会失去自我。 
 I think my job gives me a sense of identity. 我觉得我的工作给了我一种认同感。 
 - More examples
 - He was quite certain about his attacker's identity.
 - He assumed a false identity in order to escape from the police.
 - To conceal his identity, the man's words are being read by an actor.
 - Through a process of deduction , the detectives discovered the identity of the killer.
 - Australia has its own cultural identity, which is very different from that of Britain.