双语例句原声例句
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放射性碘的半衰期为八天，几周内自然衰变。
Radioactive iodine has a half-life of eight days and decays naturally within weeks.
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食品监测的初步结果表明，放射性碘的浓度已经超出日本规定的限度。
Some of the initial food monitoring results show radioactive iodine detected in concentrations above the Japanese regulatory limits.
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根据世卫组织的最新估计，20亿人 - 或世界人口的三分之一处于缺碘的危险。
The latest WHO estimate is that 2 billion people are at risk of becoming iodine deficient – or one third of the world's population.
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He saw that if you take the atomic mass of chlorine, 2 add it to the atomic mass of iodine, divide by two, you get something that is really close to the atomic mass of bromine.
他看到，如果你将氯的原子质量，加上碘的原子质量，除以，得到的数将与,溴的原子质量很接近。
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So iodine deficiency was a real problem and then salt started getting fortified with iodine, and that really corrected a lot of those deficiency problems around the world.
碘缺乏曾经是个大问题,随着加碘盐的逐渐普及,使得全球诸多碘缺乏问题得到了改善
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