Just over seventeen percent of Washingtonians live below what is considered the poverty level in the United States.

VOA: special.2009.03.20

So what you gonna see here in United States, especially at university level, is a stronger need for Muslim chaplains.

因此在美国，特别是在大学里面，需要越来越多的穆斯林教士。

普林斯顿公开课 - 人性课程节选

We've seen a boom in building in the United States that is at a record level, except for that one Korean War blip, and so I think it's a highly abnormal situation that we've been in.

所以美国出现一波建造新房的浪潮,规模空前,仅次于朝鲜战争时期,我认为这是极不正常的

耶鲁公开课 - 金融市场课程节选

The position made him the highest level African American in the United States government.

VOA: special.2009.11.01

Senator Charles Schumer - a New York Democrat - says the United States should impose punitive tariffs, if necessary, to level the playing field.

VOA: standard.2010.03.23

Climate change expert Konrad Steffen, of the University of Colorado in the United States, explained the impact of climate-induced sea level rises to coastal areas.

VOA: standard.2009.03.12

The current level is already nearly double what the United States had in Afghanistan last year, and some officials, including Secretary Gates, have expressed reluctance to send more.

VOA: standard.2009.08.11