Guided tours of the Bureau of Engraving and Printing are a popular activity for visitors to Washington,D.C.

VOA: special.2010.11.15

I can't think of any activity I'd want to do forever.

我想不出一样希望永远从事的活动。

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We attended this year's United States Air Guitar Championships in Washington,D.C.to learn more about this unusual activity.

VOA: special.2009.08.14

It is inconceivable to think of those in under-developed countries and the developed economies of the eurozone coping without System D activity given the recurring recessions that are exacerbated by the violent central bank-induced business cycles.

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The third major change is the concentration of activity in Washington, D.

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Mr. HALL: There'd be some activity but not a significant amount.

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