To clearly distinguish between right and wrong, good and bad, or different qualities of things; to draw a clear line of demarcation.
在这次辩论中，他对各个观点的利弊分析得丘壑泾渭，令人信服
In this debate, his analysis of the pros and cons of various viewpoints was clear and distinct, making it very convincing.
Era:
Early Modern
Frequency:
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