"We've known for a long time that maternal education is important," says John Cleland of the London School of Hygiene and Tropical Medicine.
伦敦卫生与热带医学学院的约翰·克莱兰说:“我们早就意识到了产妇教育的重要性。”
The researchers say the maternal death rate has been falling almost one and a half percent a year since nineteen ninety.
VOA: special.2010.04.14
These cells around the outside form the interface, the placenta, where the maternal blood circulation meets the embryonic circulation and nutrients are passed back and forth that way in a very highly regulated and important way.
外层的细胞形成接触面,即胎盘,是母血与胎血,进行血液交换,及营养物质交换的场所,整个过程高度有序并且非常重要
In "Maternal Caress," a few simple lines express the deep love of a mother for her child.
VOA: special.2009.07.12
应用推荐