在线英语听力室

【英语时差8,16】为何食盐中含有碘？

时间：2015-11-07 05:50:43

搜索关注在线英语听力室公众号：tingroom，领取免费英语资料大礼包。

（单词翻译）

 Pure, ordinary salt is simple. The scientific name for it is sodium1 chloride. But the label on a salt box shows that table salt usually contains more than just sodium chloride. Table salt often comes in “iodized” form — which means it includes a small amount of potassium iodide or sodium iodide. Iodized salt is intended to supply us with the trace amount we need of the chemical element iodine2, which is necessary for the proper functioning of our thyroid gland3. An iodine-deficient diet leads to enlargement of the thyroid gland, a condition called goiter. Severe iodine deficiency during pregnancy4 is also dangerous to the child.


分享到：


点击收听单词发音收听单词发音  

1 sodium Hrpyc     
n.（化）钠
参考例句：
  • Out over the town the sodium lights were lit.在外面，全城的钠光灯都亮了。
  • Common salt is a compound of sodium and chlorine.食盐是钠和氯的复合物。
2 iodine Da6zr     
n.碘，碘酒
参考例句：
  • The doctor painted iodine on the cut.医生在伤口上涂点碘酒。
  • Iodine tends to localize in the thyroid.碘容易集于甲状腺。
3 gland qeGzu     
n.腺体，(机)密封压盖，填料盖
参考例句：
  • This is a snake's poison gland.这就是蛇的毒腺。
  • Her mother has an underactive adrenal gland.她的母亲肾上腺机能不全。
4 pregnancy lPwxP     
n.怀孕，怀孕期
参考例句：
  • Early pregnancy is often accompanied by nausea.怀孕早期常有恶心的现象。
  • Smoking during pregnancy increases the risk of miscarriage.怀孕期吸烟会增加流产的危险。

本文本内容来源于互联网抓取和网友提交，仅供参考，部分栏目没有内容，如果您有更合适的内容，欢迎 点击提交 分享给大家。