noun🔗Share汚染物質、汚染源A foreign substance that makes something dirty, or impure, especially waste from human activities."Factory chimneys released pollutants into the air, making it difficult to breathe. "工場の煙突から汚染物質が大気中に放出され、呼吸が困難になりました。environmentsubstanceChat with AIVocabulary GamePractice Reading