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戴奥辛 dài’àoxīn
environ.	dioxin A by-product formed during the preparation of the herbicide 2, 4, 5-T, and sometimes produced by the incineration of chlorinated organic compounds. It may also occur naturally and is distributed widely in the environment, except locally in extremely low concentrations. Substantial amounts were released by the industrial accident of Seveso in 1976 (制造2,4,5-T除草剂所产生的副产物，有时也经由燃烧氯化有机物而产生。 它也可能自然产生，并广布在环境中，使其在各地区的浓度非常低。 1976年﹐Seveso的工业意外事件泄漏出大量的戴奥辛。)