We have to live with hexavalent chromium and manage it at the source.
人们不得不与六价铬共存并从源头上管理它。
Management tactics range from using bone charcoal to soak up the carcinogen and then dispose of it as toxic waste to chemically transforming hexavalent chromium to a more benign form.
管理方法多样，简单的从使用骨炭吸收致癌物，然后把骨碳当作有毒废物扔掉，到高级的使用化学方法把六价铬转化成更良性的结构。
California's proposed health goal is designed to limit possible cancer risk to just one in a million for those exposed to hexavalent chromium.
加利福尼亚提出的健康目标是要将由可能由六价铬引起癌症风险降低到百万分之一。
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