Cardiologists, such as Dr.Gerard Martin, say that within the last four years, doctors have learned how to perform more complex heart surgeries using catheters."

VOA: standard.2010.01.01

Using coronary heart disease as the outcome you see about a quadrupling of risk in this case.

以冠心病为例,两者的差别达到四倍

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

We'll come back to this in our example in the cardiovascular system when we're talking about the heart and we'll talk about how to measure the collective group of action potentials using EKG's.

这个我们回头再谈,等到我们在心血管系统的例子中,说到心脏时再说,我们会谈到如何通过,心电图测量群体动作电位

耶鲁公开课 - 生物医学工程探索课程节选