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.是什么意思_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.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句