penitent
adjective formal uk/ˈpen.ɪ.tənt/ us/ˈpen.ə.tənt/
悔过的，忏悔的
showing that you are sorry for something you have done because you feel it was wrong
"I'm sorry," she said with a penitent smile. “对不起，”她歉疚地笑着说。
It was hard to be angry with him when he looked so penitent. 当他看起来那么懊悔时，很难对他发火。
penitent
noun [ C ] formal uk/ˈpen.ɪ.tənt/ us/ˈpen.ə.tənt/
悔罪者，忏悔者
a person who is performing a formal religious act to show that they are sorry for something they have done wrong