然而，由母亲妊娠期前或妊娠期的叶酸饮食供应能减少此种先天缺陷。

However, dietary folic acid supplementation by mothers-to-be before and during pregnancy can reduce the incidence of such birth defects.

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5岁以下儿童，全脂牛奶应予以鼓励，如果其余的饮食供应足够的能量，半脱脂牛奶可用于两岁以下的儿童。

For children under five, whole milk should be encouraged, although semi-skimmed milk may be used from the age of two if the rest of the diet supplies adequate amounts of energy.

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尽管美国人的饮食习惯相对相同，但水的供应却有所不同。

While U.S diet is relatively identical, water supplies vary.

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