1. Byrd at once ordered his men to throw out two heavy food sacks.
    伯德马上命令他的助手们把两个沉重的食物袋扔掉，

2. Byrd now knew that he would be able to reach the South Pole which was 300 miles away, for there were no more mountains in sight.
    伯德这时知道他能够顺利飞抵300英里以外的南极了，因为前面再没有山了。

3. Though, at first, Byrd and his men were able to take a great many photographs of the mountains that lay below, they soon ran into serious trouble.
    虽然开始时伯德和他的助手们拍下了飞机下面连绵群山的大量照片，但他们很快就陷入了困境。

4. 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.
    美国探险家 R.E. 伯德在飞越北极3年之后，于1929年第一次飞越了南极。