commentator/ˈkɔmenteɪtə(r); `kɑmənˌtetɚ/ 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.
牛津英汉双解词典