三人行，必有我师(焉)

语法
难怪 + person "you can't blame X"
https://resources.allsetlearning.com/chinese/grammar/Using_%22nanguai%22_as_a_verb

词汇
爬, climb, crawl; 爬山, mountain climbing ( pinyin )
https://mandarinbean.com/new-hsk-2-word-list/

Guardian:
[no 难怪 of this kind that I can find]
你还真是放心我这个瞎子摸黑爬楼梯, you really aren't worried about letting me climb the stairs blind
紧急情况敲什么门，没爬窗户够给你面子了, who can knock on a door in an emergency, I'm giving you face by not climbing in the window

Me:
难怪他今天迟到了，他昨天身体非常不舒服。
我不喜欢爬山，让人太累了。