l don't care 的意思是：我不在乎/我不在意。
care
【读音】[ker]
【词性】名词、动词。
【意思】
一、作名词：
1、照料；照顾；照看；护理
How much do men share housework and the care of the children?
男人分担多少家务和照看小孩的工作？
2、小心；谨慎
Great care is needed when choosing a used car.
选购旧车时要特别小心。
3、忧虑；焦虑；引起烦恼的事；令人焦虑的事
Sam looked as if he didn't have a care in the world .
萨姆看上去好像什么事都不操心似的。
二、作动词
1、关注；在意；担忧
She cares deeply about environmental issues.
她对环境问题深感担忧。
2、关心；关怀
He genuinely cares about his employees.
他真诚地关心他的雇员。
3、 努力做
I've done this job more times than I care to remember.
这事我都记不清做了多少遍了。
扩展资料：
Care 的相关习语：
1、in the care of sb/in sb's care由…照管
The child was left in the care of friends.
小孩被留下由朋友照管。
2、take care走好，保重
Bye! Take care!
再见！多保重！
3、take care of sb/sth/yourself照顾；照料；爱护；小心
He's old enough to take care of himself.
他已经不小了，能照顾自己了。
4、would you care for…（礼貌问语）您喜欢，您愿意，您要
Would you care for another drink?
您再来一杯好吗？
参考资料来源：百度翻译——care
