I couldn't care less

US /aɪ ˈkʊdnt kɛr lɛs/
UK /aɪ ˈkʊdnt kɛr lɛs/
"I couldn't care less" picture
1.

我一点也不在乎, 我毫不在意

used to express that one does not care at all about something

:
He was complaining about his new car, but I couldn't care less.
他抱怨他的新车,但我一点也不在乎
Whether they come or not, I couldn't care less.
他们来不来,我一点也不在乎