Republicans would need a 40-seat gain in November to take back majority control in the U.S.House of Representatives.

VOA: standard.2010.05.19

The districts back in 1913 represented the population distribution of the U.S. at that time.

913年划分的区域代表着,当时美国人口的分布。

耶鲁公开课 - 金融市场课程节选

On Sunday, the United States overpowered China, coming on a power play against the U.S.team's back-up goaltender in the final three minutes.

VOA: standard.2010.02.15

Back from their recent mission, Satcher and Melvin are trying to encourage these black students to think about careers in the U.S.space program.

VOA: standard.2010.02.02

Both sons look back with pride at their fathers. Both are also working to overcome suspicions that stand in the way of renewed U.S.-Russian cooperation to meet challenges that could confront their children.

VOA: standard.2010.05.07