VOA慢速英语2012.08.07 的, develop, medicine, discovery, 呼吸困难

Rebecca949

One common problem in preterm babies is respiratory disease. The lungs are the last organs to develop. But a medicine called surfactant can save babies struggling to breathe. The story of this lifesaving medicine begins with a discovery in nineteen fifty-nine by a researcher named Mary Ellen Avery. 早产儿常见的问题之一就是呼吸系统疾病，肺部是最晚发育的器官，但一种名叫表面活性剂的药物可以解救婴儿的呼吸困难。这种救命药的故事始于1959年一位名为玛丽.艾伦.艾弗里的研究员的发现。
____________________________________________________.

本帖隐藏的内容需要回复才可以浏览

杨飞飞儿

she told the story in 2005 to children's news and at children's hospital in boston where she was the first woman to serve as physician in cheef

zhant220

she told the story in 2005 to children's news and at children's hospital in Boston, she was the first woman to serve as position in chief

sullensky

谢楼主

jizhao19960124