cornerstone 

  1. 名詞
基石, 柱石
地基, 基礎
隅石
/此名詞複數為"cornerstones"/

    同義字詞
base,basis,bedrock,bottom,footing,foundation,ground,groundwork,keystone,root,underpinning,warp,warp and woof

例句

  1. It is the very cornerstone of mathematics.
  2. Women were a cornerstone of Nazi social policy.
  3. Faith was the cornerstone of the Caffeys' lives.
  4. The earl spread the mortar for the cornerstone .
  5. The US crushed this cornerstone through the war.