你不会等到河水溢出波多马克河才意识到全球变暖是一个问题。
You don't want to see the water rising on the Potomac before deciding global warming is a problem.
波多马克鹰列车，沿西弗吉尼亚州罗姆尼的波托马克河南支线，通过鹰岩。
The Potomac Eagle train, passing Eagle Rock along the south branch of the Potomac River near Romney, W. Va.
阿灵顿公墓位在维吉尼亚州，与华盛顿特区隔著波多·马克河相望著。
It is located in Virginia across the Potomac river from Washington, d. c.
波多·马克电力公司(PEPCO)用煤量如此巨大，以致我们专门购置了两列八十节车皮的火车以加速输送煤的过程。
Potomac Electric Power Company (PEPCO) USES so much coal that we have purchased two 80-car unit trains to facilitate the delivery process.
波多·马克电力公司(PEPCO)用煤量如此巨大，以致我们专门购置了两列八十节车皮的火车以加速输送煤的过程。
Potomac Electric Power Company (PEPCO) USES so much coal that we have purchased two 80-car unit trains to facilitate the delivery process.
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