VOA常速英语2008年-Adult Stem Cells Show Medical Promise

By Alex Villarreal
Washington
28 February 2008
 

Adult stem cell therapy has successfully treated leukemia and other cancers for years, in the form of bone marrow¹ transplants. A new study in the Journal of the American Medical Association [JAMA] finds treatment with adult stem cells is also helping² patients with autoimmune diseases and heart conditions. VOA's Alex Villarreal reports.

1 marrow   

n.骨髓；精华；活力

参考例句：

• It was so cold that he felt frozen to the marrow. 天气太冷了，他感到寒冷刺骨。
• He was tired to the marrow of his bones.他真是累得筋疲力尽了。

2 helping   

n.食物的一份&adj.帮助人的，辅助的

参考例句：

• The poor children regularly pony up for a second helping of my hamburger. 那些可怜的孩子们总是要求我把我的汉堡包再给他们一份。
• By doing this, they may at times be helping to restore competition. 这样一来, 他在某些时候,有助于竞争的加强。