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equidistant (adj.)[equidistant 词源字典]: 1560s, from French équidistant (14c.), from Late Latin aequidistantem (nominative aequidistans), from aequi- (see equal (adj.)) + distans (see distant). In reference to a type of map projection, from 1866. Related: Equidistance.[equidistant etymology, equidistant origin, 英语词源]