"I don't care" 或 "I don't mind" 都可以用来表示 "我都无所谓" 的意思。
这个短语的来源可以追溯到16世纪中期，当时有一个词 "caring" 意思是"关心，在意"。后来变成了现在的"care" ，它本身就有“关心”的意思，而 “don't care” 就变成了 “不关心”的意思。
例句：
I don't care what you do. (我不在乎你做什么。)
It doesn't matter to me. I don't mind either way. (对我来说没关系。我都无所谓。)
I don't care about the money. (我不在乎钱。)