a person who comments on events, especially in the media, or on a text (尤指媒体或书面)时事评论员,时事评论家 ■a person who commentates on a sports match or other event (体育比赛或其他事件的)实况播音员,解说员
语源
late Middle English: from Latin, from commentari, frequentative of comminisci 'devise'