But people exposed to high levels of radioactive iodine can get thyroid cancer.

VOA: special.2011.03.30

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。

麻省理工公开课 - 固态化学导论课程节选

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

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

The pills flood the thyroid gland with non-radioactive iodine.

VOA: special.2011.03.30