equinoctialyoudaoicibaDictYouDict[equinoctial 词源字典]
"Happening at or near the time of an equinox", Late Middle English (in the sense 'relating to equal periods of day and night'): via Old French from Latin aequinoctialis, from aequinoctium (see equinox).[equinoctial etymology, equinoctial origin, 英语词源]