记住，这是一场九英里的步行——一个准确的数字。

Remember, it's a nine - mile walk and nine is one of the exact Numbers.

youdao

“下一个推论：这场雨无法预料，否则你会说。‘在雨中的九英里步行不是易事(a nine - mile walk in the rain is no joke)，’而不是使用“尤其”这个短语表达一种事后产生的想法。”

Next inference: the rain was unforeseen, otherwise he would have said, 'a nine - mile walk in the rain is no joke,' instead of using the 'especially' phrase as an afterthought.

youdao