In addition to Bolt, who claimed the title last year and Federer, who has won it four times in the past, Ethiopian track star Kenesisa Bekele, Spanish cycling champion Alberto Contador, Argentinian football hero Lionel Messi and motor cycling's Valentino Rossi of Italy are also in the running.

VOA: standard.2010.02.11

We did a study using the Framingham data ourselves several --some years ago where we were interested in the issue of weight cycling.

几年前我们用弗明汉研究的数据做过研究,我们对体重循环这个问题很感兴趣

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

The number of copies you get depends on how many times you do the cycling.

具体的产物数量取决于你进行循环的次数

耶鲁公开课 - 生物医学工程探索课程节选