Three Ways to Minimize Radiation Exposure

There are three factors that minimize radiation exposure to your body: Time, Distance, and Shielding.

Time--Most radioactivity（n.放射能） loses its strength fairly quickly. Limiting the time spent near the source of radiation reduces the amount of radiation exposure you will receive. Following an accident, local authorities will monitor（v.监控） any release（n.释放） of radiation and determine the level of protective actions and when the threat has passed.

Distance--The more distance between you and the source of the radiation（n.放射源）, the less radiation you will receive. In the most serious nuclear power plant accident, local officials will likely call for an evacuation（n.撤退）, thereby increasing the distance between you and the radiation.

Shielding--Like distance, the more heavy, dense materials between you and the source of the radiation, the better. This is why local officials could advise you to remain indoors if an accident occurs. In some cases, the walls in your home or workplace would be sufficient shielding to protect you for a short period of time.



【参考翻译】

最大程度降低核辐射吸收量的三种方法

当你的身体暴露在核辐射中，通过三个因素可以让辐射吸收量降低到最小：时间、距离和屏障。

时间

大部分放射活动的能量会很快衰减。你应该尽量缩短在放射源附近停留的时间，这可以降低你对核辐射吸收量。事故发生后，当地有关部门会对辐射水平进行监控，决定需要采取的保护行动的级别，决定什么时候危险过去、解除警报。

距离

离辐射源越远，你吸收到的辐射就越少。遇到最严重的核电站事故，当地官员很可能会让大家撤离，从而拉开与辐射源的距离。

屏障

像距离一样，你与辐射源之间的障碍物越重、密度越大越好。这就是为什么事故发生时，地方官员会建议大家留在室内。在有些情况下，你的住所或上班地方的墙壁足以保护你一小段时间。