bedrock
1.N-SING 单数名词根本原则；基础；基石 The bedrock of something is the principles, ideas, or facts on which it is based.
Mutual trust is the bedrock of a relationship...
互信是交往的基石。
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 bedrock principles of British democratic socialism.
英国民主社会主义的根本原则
2.N-UNCOUNT 不可数名词基岩 Bedrock is the solid rock in the ground which supports all the soil above it.
It took five years to drill down to bedrock.
耗时五年才钻到了基岩。
