bedrock

/ˈbɛdˌɹɑk/ 名词 C1

中文：基岩

The solid rock found at some depth below the ground surface. (countable, uncountable)
A basis or foundation. (countable, figuratively, uncountable) · If culture is the bedrock of a society, then language is the cornerstone of culture.
The bones. (countable, uncountable)

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If the bedrock of our past is composed of shifting sands, we must cultivate a degree of intellectual humility regarding our own recollections.

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