amphibrach (n.)youdaoicibaDictYouDict[amphibrach 词源字典]
1580s, from Latin amphibrachus, from Greek amphibrakhys, a foot consisting of a long syllable between two short, literally "short at both ends," from amphi- "on both sides" (see amphi-) + brakhys "short" (see brief (adj.)).[amphibrach etymology, amphibrach origin, 英语词源]