Read Edit View history 主因 zhǔyīn main cause Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 主因 · zhǔyīn · main cause 2026/03/04 主因 zhǔyīn main cause main reason 缺乏锻炼是体重增加的主因。 noun created sense Mar 4, 2026, 02:25 AM