sorry/ 'sɔrɪ /

1.adjective
(regretful) 懊悔的

2.adjective [+condition] [ excuse] 
(wretched) 拙劣的

(I'm) sorry!
对不起!
sorry?
请再讲一遍
to feel sorry for sb
对某人表示同情
to be sorry about sth
对某事表示歉意
I'm sorry if I offended you
如果我冒犯了你,我很抱歉
I'm sorry to hear that...
听到…我很伤心
a sorry sight
悲惨景象