I couldn't care

I couldn't care less. i couldn't care more 为什么i couldn't care less 译“我不感兴趣” 请问：I couldn't care less.中的couldn't表示什么意思? 为啥I couldn’t care less.=I could care less. 英语翻译Cos I might not know what's going on And I couldn't care 英语翻译How I feel happy really ,self couldn't care more about w I couldn`t help i couldn‘t是什么意思 I couldn't help i couldn't agree I don't care