bedrock [ˈbedrɑ:k]

例句:

• It took five years to drill down to bedrock.
  耗时五年才钻到了基岩。
  
• The triumph proved the bedrock for a stellar season.
  来自BBC
• Working-class voters form the bedrock of Labour's support.
  工薪阶层选民是支持工党的基本力量。
  
• The poor suburbs traditionally formed the bedrock of the party's support.
  贫穷的郊区在传统上构成了支持该党的牢固基础。
  
• Carefully regulated tourism is the bedrock of the economy.
  来自BBC
• This social contract is the bedrock of civilised society.
  来自THETIMES