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。

I wanted a sense of my own identity.

我想要确立自己的个性意识。

...the distinct cultural, religious and national identity of many Italians.

许多意大利人独有的文化、宗教、民族特性