avitaminosis
常见例句
- Some vitamins are not synthesized from precursors in the diet and the vitamins in diet are easy to loss activities in the processing which can cause avitaminosis.
有些维生素在体内不能合成并且商业饲粮中的维生素在加工过程中易丧失活性，往往不能满足宠物的需求，造成维生素缺乏症。
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