巴西环保人士将参加总统竞选

convention – n. a large meeting of people who come to a place for usually several days to talk about their shared work or other interests or to make decisions as a group

principled – adj. having, based on, or relating to strong beliefs about what is right and wrong

runoff - n. an additional race, contest, or election that is held because an earlier one has not resulted in a winner

survey – n. an activity in which many people are asked a question or a series of questions in order to gather information about what most people do or think about something