semper-youdaoicibaDictYouDict[semper- 词源字典]
word-forming element meaning "always, ever," from Latin semper "always, ever, at all times, continuously" (literally "once for all"), from PIE *sem- (1) "one, as one, together" (cognates: Latin semel "once," similis "like;" see same).[semper- etymology, semper- origin, 英语词源]