folic acid

例句：

1. 1. Folic acid is an essential nutrientfor pregnant women to prevent neural tube defectsin their babies.
   叶酸是孕妇必需的营养素，可以预防胎儿神经管缺陷。
2. 2.The supplement contains folic acid to helpwith bone health and reduce the risk ofheart disease.
   这种补充剂含有叶酸，有助于骨骼健康并降低心脏病风险。
3. 3. Somestudies suggest that folic acid may helpprevent cognitive decline in older adults.
   一些研究表明，叶酸可能有助于预防老年人的认知衰退。