经过一番努力后,坎贝尔了解到他的平均时速是299英里,大感失望。

经过一番努力后,坎贝尔了解到他的平均时速是299英里,大感失望。的英文翻译

基本释义

• After his attempt, Campbell was disappointed to learn that his average speed had been 299 miles per hour.