Read Edit View history 来历不明 láilìbùmíng unknown origin Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 来历不明/來歷不明 · láilìbùmíng · unknown origin 2026/03/04 来历不明 / 來歷不明 láilìbùmíng unknown origin (idiom) of unknown origin; of dubious background 这笔巨款来历不明，引起了警方的怀疑。 created sense Mar 4, 2026, 02:25 AM