中文摘要：

全面放开二胎生育，妊娠质量十分重要，孕前和孕期保健是降低孕产妇死亡和出生缺陷的重要措施。有准备、有计划地妊娠，避免出生缺陷和妊娠并发症应当关注。

英文摘要：

When the second child policy is full implemented,pregnancy quality is a very important issue.Prepregnant and pre-natal cares are important measures to reduce maternal mortality and birth defects.There should be concerns about preparation,planned pregnancy,birth defects,and pregnancy complications.