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维生素是基本营养素之一,但与其他营养素不同。它是不能成为能源和构成身体成分的有机化合物。可它又是维持生物的正常生长和生命活动所不可缺少的,仅
Vitamins are one of the basic nutrients, but different from other nutrients. It is an organic compound that can not become a source of energy and body composition. But it is also indispensable to maintain the normal growth of biological life and activities, only