Milton's nearly twenty-nine years old when he writes Lycidas.

写《利西达斯》的时候弥尔顿将近29岁了。

耶鲁公开课 - 弥尔顿课程节选

So at a given level of overweight out here -twenty-seven, twenty-nine, thirty-one, thirty-three are the body mass index, the women are more likely to get Diabetes then the men are.

在超重情况下,如果体重一定,这里的27,29,31,33,表示体重指数,女性比男性更易患糖尿病

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选