| 释义 |
key·stone AHD[kēʹstōn'] D.J.[ˈkiːˌstəʊn]K.K.[ˈkiˌston]n.（名词）- Architecture The central wedge-shaped stone of an arch that locks its parts together. Also called headstone 【建筑学】 拱顶石，塞缝石：拱的中部楔形石头，使拱的各个部分连在一起 也作 headstone
- The central supporting element of a whole.基础、主旨：整体的一个中心基本原则
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