Potomac
n. 波拖马可河（美国河名）
🗣️ 情景例句
Is it supposed to rain today?
今天要下雨吗？
I'm reading the newspaper downstairs.
我在楼下看报纸。
It was an important part of Native American's existence.
野牛是美洲土著人赖以生活的重要部分。