公道杯的作用，是使乌龙茶汤的浓度性、香气、色泽达到一致，公平待人。
The fair mug ensures that every guest can drink the Oolong tea with same concentration, ame aroma and same color. So it is fair to everybody.
公道杯的作用，是使乌龙茶汤的浓度性、香气、色泽达到一致，公平待人。
The fair mug ensures that every guest can drink the Oolong tea with same concentration, ame aroma and same color. So it is fair to everybody.
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