Melamine has also been shown to have carcinogenic effects in animals in certain circumstances, but there is insufficient evidence to make a judgment on carcinogenic risk in humans.

三聚氰胺也被证明在某些情况下对动物有致癌影响，但没有足够的证据判断其对人类的致癌风险。

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Hazardous waste is any discarded material, liquid or solid, that contains the substances to be fatal, toxic, carcinogenic, ignitable, corrosive, or explosive to humans.

危险废物就是指任何含有对人类致命的，有毒的，致癌的，可燃，腐蚀性的，或爆炸的物质的废弃材料、液体或固体。

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The DoD has already complained that the new levels are not justified by the scientific evidence on dioxin, particularly that there is a threshold under which it is not carcinogenic to humans, and that the EPA has failed to use on the most up-to-date research to formulate its clean up goals.

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