To compromise one's principles or integrity to conform to popular trends, societal expectations, or external pressure; to abandon one's steadfastness and adapt to circumstances, often implying a loss of upright character.
他在新的环境中为了融入大家，不得不刓方为圆，调整自己的言行。
To blend in with everyone in the new environment, he had to pare square to round, adjusting his words and actions.
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