請問 I could really use some cold drinks after the marathon. 的I could really use 是need 的意思嗎

還有 In my book, you guys are stupid. 的 in my book 是 什麼意思 （感覺是所謂的slang 請問這個口語上常用嗎？

麻煩了

1. I could really use some cold drinks after the marathon.=I really need/ want some cold drinks after the marathon.The idiom “could use” means “need/ want”.2. In my book, you guys are stupid.=In my opinion, you guys are stupid.The idiom “in one’s book” means “in one’s opinion”.

Charles Wang You are 100% right.