请帮忙改这个英语句子！

please wear comfortable shoes because we will have a hard time climbing the mountian

have a hard time doing sth.费力干某事

我怎么记得,have a hard time是用来指学业这方面的,不太适用与爬山吧``(仅供参考:it will be difficult for us to climbing the mountain if you wear uncomfortable shoes,so please wear a comfortable one.)

因为我们爬山会很困难，所以请穿一双舒服的鞋。

We will have a hard time to climb the mountian, so please wear comfortable shoes.