flight over the north poleIn 1929,three years after his flight over the North Pole,the American explorer,R.E.Byrd,successfully flew over the South Pole for the first time.这个句子中flight over the North Pole和flew over the South Pole 的区别是什么,flight 和fly是什么关系呢?那句子中flight over the North Pole和flew over the South Pole 是否可以替换呢?

问题描述:

flight over the north pole
In 1929,three years after his flight over the North Pole,the American explorer,R.E.Byrd,successfully flew over the South Pole for the first time.这个句子中flight over the North Pole和flew over the South Pole 的区别是什么,flight 和fly是什么关系呢?
那句子中flight over the North Pole和flew over the South Pole 是否可以替换呢?

flight是名词
fly是动词
flew是fly的过去时