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。

《柯林斯英汉双解大词典》

"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。

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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。

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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。

麻省理工公开课 - 化学原理课程节选

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

Nor, if Dr Wolfe can raise the money, will the project be confined to tropical forests.

ECONOMIST: The American Association for the Advancement of Science

Dr Welch can now track where an individual salmon spends its life and watch trends in an entire population.

ECONOMIST: Oceanography

By throwing all 14 initiators into a test sample, Dr Shivji can thus identify which shark species it contains.

ECONOMIST: DNA tracking