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以下的这个维生素食用指南能够帮助你解决一些疑难问题。 维生素A 这种维生素一般有两种方式。一种是存在于动物体中的维生素A醇,另一种是存在于某些蔬菜中的β—胡萝卜素。它
The following vitamin edible guide can help you solve some difficult problems. Vitamin A This vitamin in general there are two ways. One is vitamin A alcohol present in the body of an animal and the other is β-carotene present in some vegetables. it