Read Edit View history 黄嘌呤 huángpiàolìng xanthine Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 黄嘌呤/黃嘌呤 · huángpiàolìng · xanthine 2026/03/04 黄嘌呤 / 黃嘌呤 huángpiàolìng xanthine xanthine 咖啡因是黄嘌呤的一种衍生物。 noun created sense Mar 4, 2026, 02:25 AM