Rosalyn Schanzer shows readers the young man who was only twenty-two years old when he left Plymouth,England in eighteen thirty-one.

VOA: special.2009.02.27

There's twenty-one days, there's thirty days, there's twenty-four hours. Now look at this!

有二十一天法,三十天法,二十四小时法,还有这个

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

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

Post would fly the plane. On June twenty-third,nineteen thirty-one, Post and Gatty took off from Roosevelt Field in New York.

VOA: special.2011.04.27

This is how I end the previous course, but it's the most appropriate place to start this one, because the Paris Commune hung over Europe for the next twenty or thirty years.

我上节课结束时就讲到这里,这十分适合作为这节课的开头,因为巴黎公社的阴霾,笼罩了欧洲接下来的二三十年

耶鲁公开课 - 1871年后的法国课程节选

On July thirty-first, the ship traveled six hundred and one kilometers in only twenty-four hours.

VOA: special.2009.12.23

"Historically, during our last two recessions in ninety-one and two thousand one it's taken twenty-three months in ninety-one and about thirty-six months, three years,in our last recession in two thousand one for the United States to regain the jobs lost in the recession."

VOA: special.2009.11.06