This is the last of the president's three commencement addresses this year, and his first at a military academy.

VOA: standard.2009.05.22

In fact, you could be sitting three years from now waiting before commencement and you can get that grade adjusted.

实际上，你可以从现在到知道毕业典礼前,一直坐等三年,你可以更正成绩。

麻省理工公开课 - 固态化学导论课程节选

Plato was born in 427, which is four years after the commencement of the Peloponnesian War.

柏拉图生于公元前，427，年，即伯罗奔尼萨战争,开始之后的四年。

耶鲁公开课 - 政治哲学导论课程节选

This was the first of three commencement addresses the president is scheduled to deliver this month.

VOA: standard.2009.05.14

Mr.Obama delivered his first commencement address as president to the University of Arizona several days ago.

VOA: standard.2009.05.17

That's because the commencement speaker was U.S.Supreme Court Justice Sonia Sotomayor.

VOA: standard.2010.06.05

In many ways, it was a classic commencement address.

VOA: standard.2009.05.14

In addition to her commencement address, Justice Sotomayor had other official duties to perform at the commencement, including the formal investiture of President Rodriguez and the acceptance of the college's Medal of Honor.

VOA: standard.2010.06.05

In his commencement address, President Obama told the cadets he believes the nature of the war in Afghanistan has changed since it began in 2001, but that it is no less important today.

VOA: standard.2010.05.22