care 
英 [kɛə]  美 [kɛr] 
n. 看护；照料；忧虑；用心；小心

v. 关心；担心；关怀，照顾；喜欢，愿意；对...介意

例句：
I don't care! 

我不在乎！

a company that cares about the environment 

一家关心环境的公司

He does his work with care. 

他工作很用心。

Take care! Secret liaisons are risky. 

小心！私通是有风险的。

He waved and said, `Take care!' 

他挥手说道：“保重！”