单词：numbness of extremities due to deficiency of blood
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In her last chance to speak to the voters of Pennsylvania before tomorrow's primary, Senator Hillary Clinton went on a cross-state campaign swing today. Mark Nootbaar of member station WDUQ has more from Pittsburgh. Senator Clinton spoke about makin
2008年NPR美国国家公共电台四月
Good evening everyone, ten o'clock here in Boston. Just a few blocks fromBoston Marathon finish line where two small bombs caused such terrible,terrible carnage today, just hours into massive investigation, just moment webelieve from news conference
CNN2013年(四)月
Sickle cell disease is a blood disorder due to a single genetic mutation. It remains in populations because the mutation has a flip sideit helps to protect against malaria. Now another mutation has been shown to afford similar protection. Deficiency
Scientific American(十二)月
Why Is Insect Blood Green Or Yellow?为什么昆虫的血是绿色的或是黄色的? Youve probably heard someone use the phrase blood red, but have you ever wondered if all blood really is red? For example, think about the bugs youve seen splatter
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HEALTH REPORT - What Happens in a Stroke? Experts Liken It to a 'Brain Attack'By Cynthia Kirk Broadcast: Wednesday, January 11, 2006 I'm Steve Ember with the VOA Special English Health Report. Everyon
2006年慢速英语（一）月
Silent, slow, and solemn; bowing over still further his chronically broken back, he toiled away, 他不声不响，慢条斯理而一本正经；弓着他那长期佝偻的背，不停地干下去， as if toil were life itself, and the heavy beating
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