目的探讨北方乡村妇女亚甲基四氢叶酸还原酶（MTHFR）基因多态性与神经管畸形的关系。

Objective To explore relationship between methylenetetra hydrofolate reductase (MTHFR) polymorphism and neural tube defects (NTDs)of women in the northern countryside.

youdao

日本的东北方海岸线被海啸重创，房屋、船只被海浪卷起都一并冲向了沿岸的城市、乡村，所到之处无物可挡。

Japan's northeast coastline was hammered by the huge tsunami that turned houses and ships into floating debris as it surged into cities and villages, sweeping aside everything in its path.

youdao

日本的东北方海岸线被海啸重创，房屋、船只被海浪卷起都一并冲向了沿岸的城市、乡村，所到之处无物可挡。

Japan's northeast coastline was hammered by the huge tsunami that turned houses and ships into floating debris as it surged into cities and villages, sweeping aside everything in its path.

youdao