DariusyoudaoicibaDictYouDict[Darius 词源字典]
name of three Persian rulers, notably Darius the Great, Persian emperor 521-485 B.C.E., from Greek Darius, from Old Persian Darayavaus, probably literally "he who holds firm the good," from PIE root *dher- (2) "to hold firmly, support" (see firm (adj.)).[Darius etymology, Darius origin, 英语词源]