复数： deficiencies

提示：点击例句中的单词，就可以看到词义解释

Many children in the poor area had calcium deficiency .

许多贫困地区的儿童得了钙缺乏症。

Have you ever known anyone with a protein deficiency ?

你听说过谁患了蛋白质缺乏症吗？

Teenagers are also at risk for vitamin d deficiency .

十几岁的青年人同样也受到维生素d缺乏的威胁。

Sections . Html 's single biggest deficiency for long documents is its lack of sections .

章节html在长文本中最大的一个缺陷就是不存在章节的概念。

Causes include copper or iron deficiency and lead poisoning .

干扰的因素包括铜，铁缺乏和铅中毒。