iodin

例句：

1. 1. Iodine is an essential trace element for human health.
   碘是人体必需的微量元素。
2. 2. The iodine deficiency in the area has been a concern for many years.
   该地区的碘缺乏问题多年来一直备受关注。
3. 3. In order to prevent iodine deficiency, it's important to ensure adequate iodine intake fromfood and supplements.
   为了预防碘缺乏症，重要的是确保从食物和补充剂中摄入足够的碘。