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Translation例如,没有一种科学方法证明,暴露于100ppm 某种污染物达24 小时是“安全的”,而暴露在超过那个污染程度便是“危险的”。 (There is no way that…)

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Translation4) 传统的看法认为错误消息框的作用是在用户错了时通知他们,实际上,大多数错误公告的作用是在计算机自己糊涂时向用户报告。(Conventional wisdom has held that...)

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