铁剂和叶酸片常被配给孕妇服用。Iron and folic acid supplements are frequently given to pregnant women.甜菜富含营养,包括叶酸, 铁元素和纤维素等.Beets are high in nutrients including folate, iron and fiber.叶酸能帮助防止诸如脊柱裂等神经管畸形出生缺陷的发生.Folic acid helps prevent ...
We mustn't condemn him on mere suppositions.我们不可全凭臆测来指责他.But as with many such suppositions in natural history, no one had ever tested it.博物学中虽然有许多类似的假设，却从没人对此考证过。We must make one of two following highly improbable ...
Before they were replaced by steamships, sailing vessels like Cutty sark were used to carry tea from China and wool from Australia.大帆船被轮船代替之前, 象卡蒂萨克号这样的大帆船是用来从中国载运茶叶,从澳大利亚载运羊毛的.Australia's rugby union side enjoyed a...