Stanford was one of twenty-one American universities that took part in the contest this year.

斯坦福大学是今年参加这次竞赛的21所美国大学中的一所。

youdao

Twenty-five hundred pregnant women took part in this follow-up research. Some got one worm-killing drug. Others took a different drug.

这一跟踪研究共有2500名怀孕的准妈妈参加，其中的一些准妈妈服用了杀虫药，另一些服用了另外一种药物，还有一些仅仅采取了一些温和处理措施。

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Let us begin the Olympics,thank you." About one thousand competitors from twenty-six states and Canada took part in the event.

VOA: special.2009.08.23

In nineteen twenty-one, Mallory was part of the team sent by the British Royal Geographical Society and the British Alpine Club.

VOA: special.2010.06.30

Stanford was one of twenty-one American universities that took part in the contest this year.

VOA: special.2010.03.11

Wendell, has been teaching Entrepreneurship and Venture Capital part time at the business school for twenty-one years, and he invites sixteen venture capitalists to visit and work with his students.

NEWYORKER: Get Rich U.

That changed on Tuesday, when I was invited to be one of about twenty five people in-studio to watch Weezer perform a short set as part of the HP Live Beats Audio series.

FORBES: HP, Intel, and Weezer Rock Times Square