com·men·tate /ˈkɑmənˌtet/
  (vt.)評論,解釋(vi.)評論時事
  Com·men·tate v. t. & i.  To write comments or notes upon; to make comments. [R.]
     Commentate upon it, and return it enriched.   --Lamb.
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  commentate
       v 1: make a commentary on
       2: serve as a commentator, as in sportscasting