She said other research has shown that U. S. women of childbearing age average about 130 micrograms of folic acid daily, far below the recommended level.
她说，其他研究已经表明，美国育龄妇女平均每日叶酸摄入量约为130微克，远低于推荐的400微克。
She said other research has shown that U. S. women of childbearing age average about 130 micrograms of folic acid daily, far below the recommended level.
她说，其他研究已经表明，美国育龄妇女平均每日叶酸摄入量约为130微克，远低于推荐的400微克。
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