undercroftWiktionary 原文英美构词拆解underunder-前缀croftcroft词干under-Beneath, under · (figurative) To go from one side to the other; to progress along a path词源说明From under- + croft (crypt).释义名词noun1A cellar or vaulted storage room.2A ground-level car park that occupies the base of a building.