scho·li·ast /ˈskoliˌæst, liəst/
  注釋者
  Scho·li·ast n.  A maker of scholia; a commentator or annotator.
     No . . . quotations from Talmudists and scholiasts . . . ever marred the effect of his grave temperate discourses.   --Macaulay.
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  scholiast
       n : a scholar who writes explanatory notes on an author
           (especially an ancient commentator on a classical author)