| 释义 |
Potomac RiverNONE（无词性）- A river of the east-central United States rising in northeast West Virginia and flowing about 459 km (285 mi) along the Virginia-Maryland border to Chesapeake Bay. It is navigable for large ships to Washington, D.C.波托马克河：美国中东部河流，源自西弗吉尼亚东北部，流程约为459公里(285英里），沿弗吉尼亚一马里兰州边界流入切萨皮克湾。此河可供去往华盛顿特区的大型船只航行
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