Of concern in the current situation is ionizing radiation, which is produced by spontaneously decaying heavy isotopes, such as iodine 131 and cesium 137.

目前情况下值得忧虑的是电离辐射，它由重同位素——如碘131和铯137——自发衰变而生成。

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Edano said radiation levels at the plant rose sharply Wednesday, before falling again, but that there was no need to expand the evacuation area around the plant based on current data.

枝野幸男表示周三核电站辐射水平迅速攀升，随即又再次回落。按照目前数据，无须扩大疏散区域。

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But regarding the spinach and the tap water, at the current radiation concentrations, he would not hesitate to permit his children to consume the vegetable or the water.

但是提到目前菠菜和自来水的问题，在目前的辐射含量下，他会毫不犹豫地允许他的子女食用这些蔬菜或水。

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But tests so far show its mobile phone radiation reader rivals current consumer brands on the market, Softbank said.

CNN: New Japanese smartphone will have radiation detector

Japanese government officials stress that the radiation leak at its current level will not cause harm to humans at least 30 kilometers away.

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The method also overcomes limitations posed by current treatments in which radiation may damage portions of healthy brain tissue.

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