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维生素是人体维持正常生理功能所不可缺少的成分,功能多种多样。人体缺乏某种维生素就会发生相应的生理功能障碍甚至出现某种疾病。比如,缺乏参与构成感光物质
Vitamins are indispensable components of the body to maintain normal physiological functions, a variety of functions. The body’s lack of certain vitamins will occur corresponding physiological dysfunction or even some kind of disease. For example, the lack of participation in the formation of photosensitive material