The limit for occupational radiation exposure among workers who deal with radioactive material is 50 millisieverts.

对于职业的处理放射性物质的工人，接触辐射的极限是50毫西韦特。

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Linear No Threshold (LNT) - the methodology to calculate risk from exposure to radioactive elements from the Fukushima Daiiachi disaster.

线性无阈(LNT) - - - - -计算暴来自福岛核放射性元素灾难风险的方法。

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These cancers can be prevented if children are given pills containing the non-radioactive isotope of iodine soon after exposure.

这些癌症其实是可以避免的，只要在受到辐射之后，马上给儿童们服用不具有放射性的碘的同位素做成的药片。

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This, she said, could well be outweighing the negative effects of radioactive exposure.

BBC: Nuclear birth fears eased

He also said the bunker was subject to regular inspection, never leaked radiation, and never posed any risk to the neighborhood of radioactive exposure.

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To put the reports coming out of Japan in perspective, the NRC limits occupational radiation exposure for adults working with radioactive material to 50, 000 microsieverts a year.

WSJ: Radiation's Effect Depends on Amount