commentator

n ~ (on sth) 1 person who commentates （实况报道的）解说员. 2 person who comments 评论员: an informed commentator on political events 消息灵通的政治评论员. 3 writer of a commentary(2) 集注的作者.

commander, commander-in-chief, commanding, commandment, commando, commemorate, commemoration, commemorative, commence, commencement, commend, commendable, commendably, commendation, commensurate, comment, comment on, commentary, commentary on, commentate, commerce, commercial, commercial traveller, commercial vehicle, commercialism, commercialization, commercialize, commercialize, -ise, commercially, commingle, commisariat, commiserate, commiseration, commissar, commissary, commission, commissionaire, commissioned officer, commissioner, Commissioner for Oaths,