Dr. Lee believes that men who exercise can halve their risk of colon cancer.
李医生认为,男人坚持锻炼,可以使他们患结肠癌的风险减半。
"I am not sure that I can allow it," answered Dr. Craven.
“我不敢肯定我能允许你这么做。”克雷文医生回答。
Dr. Peter Kastl and his colleagues report that they can use tears to detect drug abuse.
彼得·卡斯特尔博士和他的同事发现,他们可以用眼泪来检测药物滥用问题。
Dr.Chan urges the international community to do everything it can to help developing countries from bearing the brunt of disease pandemics.
VOA: standard.2009.05.18
So, we can do that by using this equation, which is for s orbitals is going to be equal to dr 4 pi r squared times the wave function squared, d r.
用这个方程,对于s轨道,径向概率分布,4πr的平方,乘以波函数的平方,这很容易理解。
Dr.Nissen points out that many over the counter drugs - aspirin,ibuprofen, acetaminophen or paracetamol - can be toxic if used improperly.
VOA: standard.2010.03.02
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