Knowing what he is capable of, you have every right to be afraid.
既然你知道他的能力如何,你的担心是完全可以理解的。
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。