(1)identity n.身份;本体 (英文解释：Your identity is who you are.）

Abu is not his real name, but it's one he uses to disguise his identity. 

阿布不是他的真名，是他用于伪装身份的名字。

The police soon established his true identity and he was quickly found.  

警方不久就查出了他的真实身份，并很快找到了他。

(2)identification n.识别;鉴定;确认( 英文解释：The identification of something is the recognition that it exists, is important, or is true.)

Early identification of a disease can prevent death and illness. 

病症的及早诊断可避免死亡与病痛。

Their work includes the identification of genes which govern the growth rate and fertility. 

他们的工作包括找出那些控制生长率和繁殖能力的基因。

(3)identification 识别;验明;认出(英文解释：Your identification of a particular person or thing is your ability to name them because you know them or recognize them.）

Officials are awaiting positive identification before charging the men with war crimes. 

在以战争罪起诉这些人以前，官员们一直在等待他们身份的核实。

He's made a formal identification of the body.  

他正式确认了死者身份。

(4)identification card  n.身份证

We should have identification card on the person when we go out.  

我们外出时应随身携带身份证.

It's imperative that your signature appear on your identification card.  

身份证上必须有你的亲笔签名.