Last month's murder of both the president and the army chief of staff has heightened the country's political uncertainty at a time when Luciani says the government must move quickly to protect a generation exposed to AIDS.

VOA: standard.2009.04.24

I was the Deputy Chief of Staff at that time, but because the president was travelling in Anticard.

当时我是办公厅副主任,但是当时总统,在外访问。

普林斯顿公开课 - 国际座谈会课程节选

By the time of Columbus maize had already become the staff of life in the New World.

在哥伦布时期,玉米已成为美洲大陆的主食

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

"You needed about a five percent operating margin in order to stay in business over the long haul, especially if you are in a community like this that is growing and you have to invest in new facilities from time to time, recruit new physicians to the area and hire staff."

VOA: standard.2010.02.25

But at the same time,Admiral Mullen, who is Chairman of the Joint Chiefs of Staff, expressed confidence that with a solid Afghan partner, an increase in U.S.forces can bring a measure of security and stability to Afghanistan within a few years, as the 2007/2008 "surge" helped provide an opportunity for Iraq to move forward in a more secure environment.

VOA: standard.2009.11.04