One of the largest construction projects in the United States is taking shape along the Potomac River near Washington, D.C., and the biggest piece of that project—Gaylord Na-tional Resort and Convention Center—is at its center, bringing state-of-the-art amenities along with a 19-story structure to the area.rnNational Harbor, under construction in Prince Georges County, Md., is an ambitious $2 billion mixed-use waterfront development, covering 300 acres along 11/4-miles of the Potomac River with views of Washington, D.C., and Old Town Alexandriarnand Mount Vernon, Va. The project will add office, retail, dining, entertainment spaces and a hotel, a convention center, a public waterfront and a marina to the District of Columbia area.
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机译：美国最大的建筑项目之一正在华盛顿特区附近的波托马克河上成形，该项目的最大部分-盖勒德国家度假会议中心-位于其中心，艺术设施以及该地区的19层建筑。位于马里兰州乔治王子县的国家港口，是一个雄心勃勃的耗资20亿美元的多功能滨水区开发项目，占地300英亩，位于波托马克的11/4英里处可以欣赏华盛顿特区和弗吉尼亚州旧城区Alexandriarnand Mount Vernon景色的河。该项目将为哥伦比亚特区地区增加办公，零售，餐饮，娱乐场所和酒店，会议中心，公共滨水区和码头。
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