corner stone
柯林斯词典
1. N-COUNT The cornerstone of something is the basic part of it on which its existence, success, or truth depends. 基石[正式]
Research is the cornerstone of the profession. 研究是该职业的基石。
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1. N-COUNT The cornerstone of something is the basic part of it on which its existence, success, or truth depends. 基石[正式]
Research is the cornerstone of the profession. 研究是该职业的基石。