For example,when he was a presidential candidate, Barack Obama announced his choice for vice president on Twitter.

VOA: special.2009.02.06

We had African chieftains involved, we had the Vice-President of Ghana and the President of Togo and on and on and on.

当时还有非洲酋长参与,还有加纳的副总统和多哥的总统,等等等等

耶鲁公开课 - 美国内战与重建课程节选

Questions of good and bad, virtue and vice, appear on virtually every page of The Prince.

善恶，美德与邪恶的问题，几乎出现在《君王论》的每一页的篇幅中。

耶鲁公开课 - 政治哲学导论课程节选

First on the list -- after the vice president -- was the secretary of state.

VOA: special.2010.05.06

But the representatives were not able to agree on a vice presidential candidate.

VOA: special.2009.01.22

For vice president, they decided on another southerner, John Tyler.

VOA: special.2009.01.22

The vice president professed bafflement on what President Kim Jong Il hopes to achieve in the latest standoff with the international community.

VOA: standard.2009.06.14

Former Vice President Dick Cheney spoke at length on the subject at a Washington forum in May.

VOA: standard.2009.08.24

Sebelius was given a second, ceremonial oath of office on Friday, by Vice President Joe Biden.

VOA: standard.2009.05.01

Angela Laumoli, a high school vice principal, says the 3,000 villagers are drawing on ties of kinship,friendship, and church membership to get through the trauma.

VOA: standard.2009.10.04

Vice President Joe Biden is Mr.Obama's point man on the Recovery Act.

VOA: standard.2010.06.18

On Memorial Day,the day Americans remember the fallen, the president or vice president traditionally lays a wreath at the Tomb of the Unknown - this is the scene from last year.

VOA: standard.2010.05.26

The good news is that progress against cancer has been made on many fronts,says Susan Gapstur, vice president of Epidemiology at the American Cancer Society and co-author of a commentary in the journal.

VOA: standard.2010.03.25

Appearing on NBC's Meet The Press program, Vice President Biden pledged enforcement of the sanctions, which include financial penalties and authorize searches of North Korean ships suspected of carrying nuclear materials or ballistic missile components.

VOA: standard.2009.06.14