日本一项实验显示，啤酒中所含的"假尿嘧啶" 和"褪黑素"、"甜菜碱" 等成分，能在一定程度上减轻辐射对人体所产生的危害。

An experiment in Japan found certain ingredients of beer, such as pseudouridine, melatonine, and abromine can lessen the harm done by radiation to the human body.

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每种药物对人都有危险和副作用，但是从总体来看，acetaminophen相对于其他成分来说对人的危害是低的。

Every drug has risks and side effects, but over all the risk of acetaminophen to any individual is low.

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他们首先确定与食品及食品成分有关的危害性，然后评价危害发生时风险的大小。

They first identify hazards related to foods or food components and then estimate the size of the risk that the hazard will occur.

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