a person who believes in and tries to explain and persuade people of the truth or benefits of an idea or theory
(思想、理论的)倡导者;鼓吹者;拥护者;解释者
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an early exponent of the teachings of Thomas Aquinas .托马斯·阿奎那教义的早期支持者。
a person who has and demonstrates a particular skill, especially to a high standard
代表人物
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he's the world's leading exponent of country rock guitar .他是世界乡村摇滚吉他的主要代表人物。
【数】 指数。
【语言学】 成分。
"late 16th cent. (as an adjective in the sense ‘expounding’): from Latin