三人行，必有我师(焉)

语法
简直 + 是, "basically X" (bottom of page)
https://resources.allsetlearning.com/chinese/grammar/Expressing_%22simply%22_with_%22jianzhi%22

词汇
借, borrow (pinyin in tags)
https://mandarinbean.com/new-hsk-2-word-list/
[or "lend" in context, which is highly confusing]

Guardian:
他简直是我偶像, he's basically my idol
我之前就觉得沈教授滴酒不沾，又和一切的现代设备绝缘，简直就是个活化石, I've been thinking, Professor Shen, you don't drink a drop of alcohol, you don't have a thing to do with modern-day equipment, you're basically a living fossil
我去，但是我要向你借一个人, I'll go, but I need to borrow someone from you

Me:
这个房子简直是个城堡，你看那么大！
我姐给你这本书，真的有意思。