The study involved forty-four traders and their profits and losses over a twenty-month period ending in two thousand seven.

VOA: special.2009.02.25

And a twenty-four-year-old Milton, after seven years of education, simply decides not to go. Instead of joining the ministry, Milton instead returns home and he stays at home without any means of supporting himself for six years.

而24岁的弥尔顿，在结束了7年的学业之后，却决定不那么做,他反而是回到了家中,在家里呆了6年。

耶鲁公开课 - 弥尔顿课程节选

About twenty-seven percent said they plan to go to graduate school, compared to about twenty-four percent a year ago.

VOA: special.2009.06.25

Last year thirty-seven percent of Peace Corps volunteers were serving in Africa and twenty-four percent in Latin America.

VOA: special.2011.03.28

They had four children. But in eighteen sixty-seven her husband and all four children died of yellow fever.

VOA: special.2009.03.16

But he flew one hundred eighty-seven kilometers high, and four hundred eighty kilometers from the launch pad.

VOA: special.2009.06.17

He was seventy-seven. Senator Kennedy often known as Ted or Teddy was the youngest of four sons born to Rose and Joseph Kennedy.

VOA: special.2009.08.29

The average published price for undergraduate study at a four-year public college was about seven thousand dollars.

VOA: special.2010.04.08

"Those are the babies who are born between thirty-four and thirty-seven weeks gestation.

VOA: special.2009.10.26

Gemini Six was now eight kilometers behind, and twenty-four kilometers below, Gemini Seven.

VOA: special.2009.07.01

They had six children over a seven-year period, four girls and two boys.

VOA: special.2010.04.18

Eighty-four teams from twenty-seven countries competed with robots made with LEGO products.

VOA: special.2009.04.24

Fifty-seven percent graduated with a bachelor of arts degree in four years.

VOA: special.2009.07.23

About four hundred diplomats,scientists, and Antarctic program supervisors from forty-seven countries met.

VOA: special.2009.06.03

Six-week-old babies generally breastfeed seven to nine times in a twenty-four-hour period.

VOA: special.2010.08.04

Thirty-seven years ago, just four percent of wives were top earners.

VOA: special.2010.02.19