Read Edit View history 鞣酸 róusuān tannin Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 鞣酸 · róusuān · tannin 2026/03/04 鞣酸 róusuān tannin tannin 茶叶中含有少量的鞣酸。 noun created sense Mar 4, 2026, 02:25 AM