She really gets under my skin.她真使我心烦。

I used to hate the city, but after a while it kind of got under my skin. [=I grew to like it]我以前很讨厌这个城市，但是过了一段时间以后我有些喜欢它了。

The actress accepted the role because the character really got under her skin.女演员接受了这一角色，因为她确实很喜欢这个人物。