如果这些蛋白源来自于其它地方，那么如何确保不被来自于非疯牛病风险可忽略国家的特殊风险物质污染。
If the protein source was obtained elsewhere, how is it determined that it was not cross contaminated with bovine SRM from countries not of negligible BSE risk?
通过对阜新市垃圾填埋场进行现场调查和资料分析，对其存在的环境风险进行了剖析，识别了该垃圾填埋场的风险物质以及潜在的风险事故类型。
By on-site investigation and data analysis, environmental risks existing in Fuxin landfill were analyzed, and the risk materials and the potential risk accidents in Fuxin landfill were identified.
虽然这些化学物质的简单存在并不一定表明存在健康风险，但典型的美国人身上携带这些化学物质的事实让琼和他的同事感到震惊。
While the simple presence of these chemicals does not necessarily indicate a health risk, the fact that typical Americans carry these chemicals at all shocked June and his fellow participants.
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