But because some people do not plan their pregnancies, several countries require that the grains used to make bread, breakfast cereals and suchlike be fortified with folic acid.
不过，由于有些人生孩子之前没有计划，个别国家规定：凡是谷物，不论用于制作面包、早餐麦片或其他食物，都要添加叶酸。
On average, Yang's team found that the women consumed 128 mcg of folic acid from fortified foods each day.
杨氏领导的团队发现女性每日平均从强化谷物摄取128毫克的叶酸。
Folic acid is found in many fortified cereals. It can also be obtained from totally natural sources including green, leafy vegetables, beans and nuts.
在很多的谷类产品，包括绿色叶类蔬菜、豆类和坚果中也天然存在叶酸。
Many foods are also fortified with folic acid.
许多食物都富含叶酸。
During pregnancy the supply of folic acid from daily diet exclusively is not enough, and folic acid fortified food is indispensable.
孕期只通过膳食补充叶酸是不够的，还需要摄取含叶酸的维生素类补给品。
Many foods are now fortified with folic acid.
现在许多食品都人工加入了大量叶酸。
"Our results need confirmation in other populations and underline the call for safety monitoring following the widespread consumption of folic acid from dietary supplements and fortified foods, " Dr.
但是我们的研究结果需要在心脏病以外的人群进一步证实，现在叶酸的补充方法是额外摄入或掺入食物，应用人群很广泛，有必要对这种现状进行监控。
"Our results need confirmation in other populations and underline the call for safety monitoring following the widespread consumption of folic acid from dietary supplements and fortified foods, " Dr.
但是我们的研究结果需要在心脏病以外的人群进一步证实，现在叶酸的补充方法是额外摄入或掺入食物，应用人群很广泛，有必要对这种现状进行监控。
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