单词：cornerstones
音标：[ˈkɔ:nəˌstəʊnz] ；
n. 奠基石( cornerstone的复数形式 ); 基础; 最重要部份; 柱石
n. the fundamental assumptions from which something is begun or developed or calculated or explained
n. a stone in the exterior of a large and important building; usually carved with a date and laid with appropriate ceremonies
n. a stone at the outer corner of two intersecting masonry walls
n. a stone in the exterior of a large and important building; usually carved with a date and laid with appropriate ceremonies
n. a stone at the outer corner of two intersecting masonry walls