例句與造句

1. Folic acid can protect against heart defects as well as its better - known role in protecting against spinal cord defects and women should take it before conception
   葉酸可以預(yù)防先天性心臟缺陷，除此之外，還應(yīng)了解預(yù)防脊髓缺陷的作用，女性在懷孕時(shí)應(yīng)服用葉酸。
2. It's difficult to find spinal cord defects in a sentence. 用spinal cord defects造句挺難的