名词

1. 阐述者;拥护者;倡导者
An exponent of an idea, theory, or plan is a person who supports and explains it, and who tries to persuade other people that it is a good idea.

2. 擅长者;大师;行家
An exponent of a particular skill or activity is a person who is good at it.

1. a mathematical notation indicating the number of times a quantity is multiplied by itself

Synonym: powerindex

2. someone who expounds and interprets or explains

3. a person who pleads for a cause or propounds an idea

Synonym: advocateadvocatorproponent