bedrock

noun
🔊/ˈbedrɒk/
🔊/ˈbedrɑːk/
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  1. [singular] a strong base for something, especially the facts or the principles on which it is based牢固基础;基本事实;基本原则
    • The poor suburbs traditionally formed the bedrock of the party's support.传统上说,该党的根基在贫穷的郊区。🔊🔊
    • Honesty is the bedrock of any healthy relationship.诚实是维持一切良好关系的基本原则。🔊🔊
  2. [uncountable] the solid rock in the ground below the loose soil and sand基岩(松软的沙、土层下的岩石)