可能是这些原因导致波旁威士忌造成的伤害更严重：很多酒精饮料含都含有叫同系物的发酵副产品，这些复杂的有机混合物如果大剂量吸收还能造成中毒的效果。
Here's why bourbon might hurt more: many alcoholic beverages contain byproducts of fermentation called congeners, complex organic compounds that in large doses can have toxic effects.
这是科学异教：公认的常识是，任何程度的辐射都会带来伤害，高剂量则会引起癌症及死亡。
This is scientific heresy: the received wisdom is that any level of radiation causes harm and high doses result in cancer and death.
志愿者饮用了微量的放射性元素标记的药物——剂量小到没有伤害，只有足量的百分之一。
Volunteers are given tiny traces of a radioactively labelled drug-too small to harm them, and typically just one-hundredth of the estimated full dose-in a drink.
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