她经常把装有放射性同位素的试管放在口袋里，对试管里发出的漂亮的蓝绿光赞不绝口。
She had often carried test tubes containing radioactive isotopes in her pocket, remarking on the pretty blue-green light they gave off.
研究人员展示了一块一便士大小的“核能电池”，该电池可利用放射性同位素的衰变产生电能。
Researchers have demonstrated a penny-sized "nuclear battery" that produces energy from the decay of radioisotopes.
并且，他们或许要对2号反应堆周边其他放射性同位素的含量，包括对铯、钡、钴、镧的浑浊度，进行重新检测。
And they still may need to retest for other radioactive isotopes that had been found in the seawater around the No. 2 reactor, including troubling quantities of cesium, barium, cobalt and lanthanum.
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