n.重要人物；n.支持者,
Merriam-Webster Online Dictionary
protagonist (noun)1.
a) the principal character in a literary work (as a drama or story)
b) a leading actor, character, or participant in a literary work or real event
2.
a leader, , or supporter of a cause - proponent champion
Merriam-Webster Online Thesaurus
protagonist (noun)a person who actively supports or favors a cause
SYNONYMS:
advocate, advocator, apostle, backer, booster, champion, expounder, espouser, friend, gospeler ( gospeller), herald, hierophant, high priest, paladin, promoter, proponent, protagonist, supporter, true believer, tub-thumper, white knightRELATED WORDS:
loyalist, partisan ( partizan), stalwart; adherent, cohort, disciple, follower; interpreter; applauder, cheerleader, encourager, fellow travelerNEAR ANTONYMS:
enemy, foe, rival; belittler, critic, faultfinder