exponent

1. N-COUNT 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. 倡導(dǎo)者[正式]

...a leading exponent of test-tube baby techniques. …一位試琯嬰兒技術(shù)的主要倡導(dǎo)者。

2. N-COUNT An exponent of a particular skill or activity is a person who is good at it. 擅長者; 典範(fàn)

The Alvin Ailey American Dance Theatre was formed in the 1950s and quickly established itself as a leading exponent of progressive choreography and contemporary dance. 阿爾文·艾利美國舞蹈劇形成於20世紀(jì)50年代，竝很快樹立自己爲(wèi)激進(jìn)舞蹈藝術(shù)和現(xiàn)代舞蹈的最主要的典範(fàn)。