l don't care的意思是我不在乎或者我不在意。care作动词时，其第三人称单数为cares；现在分词为caring；过去式为cared；过去分词为cared；其意思是关心、在意、关注、担忧、努力做；其作名词时，意思是照顾、护理、照料、谨慎、忧虑、焦虑、引起烦恼的事、令人焦虑的事。

例句：1、I don't care what colour she is.

我不在乎她的肤色。

2、I don't care about what you think;save your breath to cool your porridge!

我不在乎你怎么想，你省点力气，别白费口舌了！

3、I pretended not to care but I was screaming inside.

表面上我佯装不在乎，但内心却在高声喊叫。

4、At first I really didn't care whether he came or not.

起先我真的不在乎他是否会来。

5、Personally,I couldn't have cared less whether the ice-cream came from Italy or England.

就我来说，我根本不在乎冰淇淋是意大利产的，还是英国产的。