To produce hemoglobin and red blood cells, your body needs iron, vitamin B-12, folate and other nutrients from the foods you eat.

骨髓是一种红色、海绵状的东东，居住在很多大骨头的腔隙（骨髓腔）里；它需要铁元素、维生素B 12 、叶酸等原料来制造血红蛋白和红细胞。

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To produce hemoglobin and red blood cells, your body needs iron, vitamin B-12, folate and other nutrients from the foods you eat.

骨髓是一种红色、海绵状的东东，居住在很多大骨头的腔隙（骨髓腔）里；它需要铁元素、维生素B 12 、叶酸等原料来制造血红蛋白和红细胞。

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