proselytizer

那位热情的传教士挨家挨户地劝说人们加入他的教会。

The enthusiastic ___proselytizer went door to door urging people to join his church.

他是一位狂热的健康饮食倡导者，总是劝说朋友们改变饮食习惯。

He is a passionate ___proselytizer for healthy eating, always convincing friends to change their diets.