VOA慢速英语:与Facebook不同 Twitter禁止政治广告

advocacy –n. an effort to support a cause or proposal

challenger –n. a person who is competing against someone who holds already holds an office

confront –v. to oppose or challenge a person or a group in a forceful way

censor –v. to examine books, movies or other forms of communication in order to remove things that are considered harmful to society