Heart rate tracking for three of the Alaska bears showed a drop from 55 beats per minute on average before hibernation to 14 erratic ones per minute in winter.

对三头阿拉斯加的黑熊的心率追踪显示出它们在冬眠前的平均每分钟 55 下降低到了冬天里每分钟飘忽不定的 14 下。

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As he ran down the street with a light heart to the bookshop, he saw a poor German family, the father, mother and three children walking in the cold wind.

当他轻松地沿街跑向书店时，他看到一个贫穷的德国家庭，有爸爸、妈妈和三个孩子，在寒风中走着。

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At the heart of the two thousand three hundred pages in the bill are promises to protect average Americans.

VOA: special.2010.07.23

I'd like to give you examples of three of very famous epistudies on diet and health: The Framingham Heart Study, The Seven Country Study, and The Nurses' Health Study, and then we'll talk about some of the overall results from these sort of things.

我想给大家讲有关饮食与健康的关系的,三个著名传染病学研究实验,弗明汉心脏病研究,七国研究,以及护士健康研究,然后讲一下这些因素带来的一些总体影响

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

A new study used a computer model to predict how just three grams less a day would affect heart disease in the United States.

VOA: special.2010.01.27

Traditionally, hospitals all over the world do two or three heart surgeries in a day.

CNN: In pursuit of the $800 heart surgery

Cheney had three heart attacks between 1978 and 1988, the year he underwent quadruple-bypass surgery.

CNN: Heart Murmurs

The man liked to eat and drink, as unfortunately evidenced by his three heart attacks, the last fatal in 1973.

BBC: A presidential tour of Austin