Read Edit View history 污染源 wūrǎnyuán pollution source Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 污染源 · wūrǎnyuán · pollution source 2026/03/10 污染源 wūrǎnyuán pollution source the origin or point from which pollutants enter the environment 工厂是主要的污染源之一。 noun created sense Mar 10, 2026, 03:34 AM