United States President Barack Obama, who was not at Tuesday's ceremonies, sent a message saying that today there is "a different era in which the United States and Poland are close allies."

VOA: standard.2009.09.01

The White House Chief of Staff is the highest ranking member of the executive office of the president of the United States.

白宫办公厅主任,是美国总统的,行政办公室当中,职位最高的人员。

普林斯顿公开课 - 国际座谈会课程节选

The interesting thing is that the next President of the United States will likely have a mandate for big changes Maybe it's just as well that Fabozzi, et al.

有趣的是下届美国总统,很有可能给出,大变革的指令,也许法博齐等人推迟自己的书再版就是这个原因。

耶鲁公开课 - 金融市场课程节选

The vote was seen as a major setback for Mr.Topolanek as it came just days before a planned visit by United States President Barack Obama and midway through the rotation of the Czech Republic's European Union presidency.

VOA: standard.2009.03.25

The Office of the White House Chief of Staff is the highest office, and the Chief of Staff is the highest ranking member of the executive office of the president of the United States.

白宫办公厅是,最高级别的政府机关，而办公厅主任是,美国总统行政办公室,级别最高的官员。

普林斯顿公开课 - 国际座谈会课程节选

He will be inaugurated as the 44th president of the United States, and the first black president, on January 20th.

VOA: special.2009.01.12

Which president did the most to stimulate growth in the economy in the United States Ronald Reagan, Bill Clinton, ? or George W. Bush?

以下哪位总统,为刺激美国经济增长贡献最多,罗纳德·里根，比尔·克林顿，还是乔治·W·布什？

斯坦福公开课 - 经济学课程节选

I, George Walker Bush, do solemnly swear... That I will faithfully execute the office of president of the United States...

VOA: special.2009.01.19

The Chief of Staff is often said to be the secnond most powerful man in the country, after the president who is the most powerful man not only in the United States, but also in the world.

办公厅主任被称为,国内第二有权利的人，仅次于美国总统,总统不仅在美国权力最大，在世界上也是如此。

普林斯顿公开课 - 国际座谈会课程节选

Theodore Roosevelt, who later became president of the United States, called Riis the most useful citizen in New York City.

VOA: special.2010.08.01

Last year,the top news story was the election of Barack Obama as the first African-American president of the United States.

VOA: special.2010.01.02

A year later, the president of the United States, Jimmy Carter,honored the social scientist with America's highest award for civilians.

VOA: special.2011.07.03

They chose the election of Barack Obama as president of the United States as the top news story of 2008.

VOA: special.2009.01.03

Observers say North Korea is attempting to reconnect with the United States now that it has a new president.

VOA: special.2009.08.08

The president wants the United States to regain the world's highest college graduation rates, especially in math and science.

VOA: special.2009.07.30

A year later, the president of the United States, Jimmy Carter, honored the social scientist with America's highest award for civilians.

VOA: special.2010.01.17

Roosevelt was forty-two years old -- the youngest man ever to hold the office of president of the United States.

VOA: special.2010.08.05

On March fourth, eighteen sixty-nine, Ulysses Grant traveled to Washington for his inauguration as the eighteenth president of the United States.

VOA: special.2010.02.11

On a cold and cloudy day in March of eighteen sixty-one, Abraham Lincoln became the sixteenth president of the United States.

VOA: special.2009.08.06

Presumably,he will be taking the oath of office shortly, and become the thirty-sixth president of the United States."

VOA: special.2009.08.16

On that same day, Abraham Lincoln left his home in Illinois to become president of the United States.

VOA: special.2009.07.23

The convention named former United States Senator Jefferson Davis to be president of the Confederate States of America.

VOA: special.2009.07.23

But from his office in the White House, he must also attend to his other duties as president of the United States.

VOA: special.2010.05.10

Rutherford Hayes was sworn into office as the nineteenth president of the United States in eighteen seventy-seven.

VOA: special.2010.03.11

Lincoln said only that he would faithfully execute the duties of President of all the United States.

VOA: special.2009.07.30

He also told President Karzai that the United States will make every effort to avoid harming civilians as it helps the Afghan government.

VOA: special.2009.05.09

Because of that, some people joked that Barbie could not legally become president of the United States.

VOA: special.2009.04.06

Standing in front of the Capitol, Barack Obama became the first African-American president of the United States.

VOA: special.2009.01.24

On Tuesday, Barack Obama will be sworn in as the 44th president of the United States.

VOA: special.2009.01.19

For example, the United States Constitution gives the president power to veto bills passed by Congress.

VOA: special.2010.03.11