commentate
/ˈkɒmənteɪt/verb
no obj.
- report on an event as it occurs, especially for a news or sports broadcast; provide a commentary（尤指对新闻、体育）进行实况播音（或报导）; 作解说：
they commentate on live Monday matches.
他们对星期一的比赛进行现场实况报道。
词源
mid 19th cent.: back-formation from COMMENTATOR.