英语语法分析

The best evidence to date concerns folate, one of the B vitamins.

迄今为止最好的证据是叶酸，即维生素B的一种。

Check iron and folate levels.

检查铁和叶酸的水平。

People with diets low in folate seem to have higher rates of cancer.

吃含叶酸低食物的人患癌率似乎较高。