I couldn't care less
US /aɪ ˈkʊdnt kɛr lɛs/
UK /aɪ ˈkʊdnt kɛr lɛs/

1.
我一點也不在乎, 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.
他抱怨他的新車,但我一點也不在乎。
•
Whether they come or not, I couldn't care less.
他們來不來,我一點也不在乎。