似乎《有毒物质管理法案》实质上确立了安全性的假定，在要求对化学药品做进一步检查之前，环境保护局必须证明这个假定。
It seems that TSCA essentially establishes a presumption of safety, which EPA must overcome before it may require further testing of a chemical.
20世纪80年代，由于一些药盒内掺入了有毒物质，强生迅速召回泰诺胶囊，这曾使它成为危机管理的楷模。
In the 1980s Johnson & Johnson's swift recall of Tylenol capsules, after some packs had been laced with poison, made it a model for crisis management.
1980年代，由于部分药盒内掺入了有毒物质，强生迅速召回泰诺胶囊，这曾使它成为危机管理的楷模。
In the 1980s its swift recall of Tylenol capsules, after some packs had been laced with poison, made it a model for crisis management.
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