Although the extraction process in each location differs, they share a need for highly toxic chemicals.

尽管各地区提取元素方法不同，但是都需要一些剧毒化学物质。

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The Directory specifies the judging boundary of the highly toxic chemicals and contains 335 varieties of highly toxic chemicals.

本目录规定了剧毒化学品判定界限，共收录335种剧毒化学品。

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Article 3 the state adopts a system of licensing administration on the purchase or road transportation of highly toxic chemicals.

第三条国家对购买和通过公路运输剧毒化学品行为实行许可管理制度。

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Michigan's Kalamazoo River is polluted by polychlorinated biphenyls (PCBs), highly toxic chemicals banned in the 1970s.

CNN: Pregnant women should follow guidelines on eating fish

Bush announced his support for a global treaty which calls for the elimination of a dozen highly toxic chemicals.

CNN: Sci-Tech - Bush aides defend environmental record

One contentious moment was when Jackson and the EPA told BP to stop using highly toxic chemicals in the Gulf to disperse the oil.

CNN: EPA's Jackson haunted by oil spill unknowns