丙酮酸 bǐng tóng suān 🔊 pyruvic acid CH3COCOOH + Keep this word Meanings bǐng tóng suān pyruvic acid CH3COCOOH Its characters 丙bǐngthird of the ten Heavenly Stems 十天干[shi2…HSK 7–9酮tóngketone酸suānsourHSK 4