利比里亚国家是一个半世纪前由来自美国的获得自由的奴隶建立的。

The state of Liberia was formed a century and a half ago by freed slaves from the United States.

《柯林斯英汉双解大词典》

美国国家航空航天局发现了其计算中的一个数学错误。

NASA discovered a mathematical error in its calculations.

《柯林斯英汉双解大词典》

尽管经济形势严峻，但年轻的美国人仍将美国视为一个充满机遇的国家。

Despite being in a tough economic position, young Americans would see the country as one of opportunities.

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The U.S. was practically the last country to copy this system because, in the 1930s, because it didn't sound American.

美国几乎算是最后一个效仿此体系的国家,因为在上世纪三十年代。

耶鲁公开课 - 金融市场课程节选

And also in terms of people saying, Well, you know what, that's all well and good because this is really fundamentally a Christian nation.

另外一些人说，现在这样很好,因为美国从根本讲，是一个信仰基督教的国家。

普林斯顿公开课 - 人性课程节选

The U.S. Is actually an important country for regulation because it has been a model for much of the regulations around the world.

在监管方面,美国确实是一个重要的国家,美国的监管制度已成为各国的模板

耶鲁公开课 - 金融市场课程节选