upkeepWiktionary 原文中文来自 ECDICTn.维持，维修费构词拆分up词根/词干+keep词根/词干词源说明From up + keep.释义（英文）名词 NounMaintenance; the act or effort of keeping something in good and working condition.动词 Verb(transitive, UK) To maintain (something) or keep it in good repair.