有的母亲分娩时选择硬膜外麻醉。Some mothers choose to have an epidural when giving birth.母亲们了解分娩时的痛苦.Mothers know the travail of giving birth to a child.当妇女分娩时, 子宫颈张开让婴儿生出来.When a woman is in labour, her cervix opens up to allow the bab...
Both my parents were devout Anglicans.我的父母都是虔诚的圣公会教徒。So are Anglicans, the Presbyterians, the Lutherans, and the ones in between.同时,也有圣公会 、 长老会 、 路德会 、 以及其他宗派在内....
Lindberg and his colleagues suggested that it was the epicuticle.林格伯等人提出,这是毛纤维外层薄膜的作用.Recent work has shown conclusively that the epicuticle is discontinuous.最近研究工作已总结性地表明表皮层薄膜并不是连续的....