careful 
英 [ˈkɛəfʊl]  美 [ˈkerfl] 
adj. 小心的，仔细的，周密的，谨慎的；节约的

例句：
She is a careful driver. 

她开车非常小心谨慎。

They are radioactive and need careful handling. 

它们是有放射性的，需要小心处理。

Careful on those stairs! 

走楼梯时要当心！

He has decided to prosecute her after careful consideration of all the relevant facts. 

仔细考虑过所有相关事实后，他决定起诉她。

After careful thought, he decided not to tell her. 

经深思熟虑后他决定不告诉她。

We need to give careful thought to detailed matters of procedure. 

我们需要仔细考虑程序的细节问题。