The weakness is caused by a deficiency of Vitamin C.
这种衰弱是由于缺乏维生素C而引起的。
Vitamin C plays a critical role in health, and a prolonged deficiency leads to scurvy and eventually to death.
维生素C在维持健康方面起了重要的作用，长期缺乏将引起坏血病，最终导致死亡。
A disease caused by deficiency of vitamin c, characterized by spongy and bleeding gums, bleeding under the skin, and extreme weakness.
一种由于缺少维生素c引起的疾病，症状为多孔的和爱流血的牙床，皮下出血和极度虚弱。
Scurvy (N. Lat. scorbutus) is a deficiency disease that results from lack of vitamin C, which is required for correct collagen synthesis in humans.
维生素C又称坏血酸是人类营养中所需要的最重要的维生素之一，缺乏维生素C会产生坏血病。
Feed prawns with mixture of feedstuffs, can avoid prawn disease caused by deficiency of Vitamin c.
平时拌料投喂，可避免缺乏维生素c所造成的对虾病害。
Feed prawns with mixture of feedstuffs, can avoid prawn disease caused by deficiency of Vitamin c.
平时拌料投喂，可避免缺乏维生素c所造成的对虾病害。
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