careful的副词是carefully，含义是小心地，谨慎地；仔细地，认真地。
基本字义carefully
英['keəfəlɪ] 美['kɛrfəli]
adv.小心地，谨慎地；仔细地，认真地
双语例句1.We carefully watched every detail of his action.
我们仔细观察了他动作的每个细节。
2.I backed up carefully until I felt the wall against my back.
我小心翼翼地后退，直到感觉后背碰到了墙壁。
3.He studied the keyboard carefully, one finger poised.
他仔细研究了键盘，一个手指随时准备敲击。
4.He folded the paper carefully.
他把纸小心地折起来。
5.I am carefully selecting the breeding stock.
我正在精心挑选种畜。
