Read Edit View history 白矾 báifán alum Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 白矾/白礬 · báifán · alum 2026/03/04 白矾 / 白礬 báifán alum alum 白矾常用于净化饮用水。 noun created sense Mar 4, 2026, 02:25 AM