Potomac
n. 波拖马可河（美国河名）
🗣️ 情景例句
We're in here, Dad.
我们在里面， 爸爸。
I am old enough to make up my own mind.
我已经长大了，可以自己拿主意了。
But the historian attempting to reconstruct the distant past is always faced with a difficult task.
但是，历史学家企图重现遥远的过去可是一项艰巨的任务，