n. 注释者, 评注者

[ noun ]
a scholar who writes explanatory notes on an author (especially an ancient commentator on a classical author)
<noun.person>

Scholiast \Scho"li*ast\, n. [Gr. ?, fr. ? a scholium: cf. F.
scoliate. See {Scholium}.]
A maker of scholia; a commentator or annotator.

No . . . quotations from Talmudists and scholiasts . .
. ever marred the effect of his grave temperate
discourses. --Macaulay.