华盛顿正式的名称是华盛顿哥伦比亚特区，或简称特区，是美国的首都，建立于1790年7月16日。

Washington formally the District of Columbia and commonly referred to as Washington, the District, or simply D.C., is the capital of the United States, founded on July 16, 1790.

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我们现在在华盛顿特区，美国的首都。

We're now in Washington D. C., the capital city of America.

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华盛顿特区是美国的首都。

Washington D. C. is the capital of America.

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