cornerstoneKK [ˋkɔrnɚˏston] /ˈkɔɹnɚˌstoʊn/发音名词1基石、基础、根本Mutual trust is the cornerstone of any lasting partnership.互信是任何长久合作关系的基石。2奠基石The mayor laid the cornerstone of the new library last spring.市长去年春天为新图书馆放下奠基石。3墙角石、基角石建筑The cornerstone at the base of the wall bears the year 1908.墙基处的那块墙角石上刻著一九〇八年。用这个字练口说→