bedrock

US /ˈbɛdˌrɑk/

UK /'bedrɒk/

C1 高級
n. (c./u.)名詞 (可數/不可數)基岩
The bedrock of a business is in sound financial advice
n. (c./u.)名詞 (可數/不可數)岩床
The ground may initially appear quite soft, but beneath the soil there is a solid, hard level of bedrock

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