Not surprisingly, her teacher is getting irritated with her.是什么意思？

Not surprisingly, her teacher is getting irritated with her.

毫不奇怪，她的老师有点被她惹恼了。

not

adv. 不，[用以表示否定、否认、拒绝、禁止等]不是，几乎不，未必，没有[用于否定后面的词或短语]；

例句
It became very clear that the incident was not just an aberration, it was not just a single incident.
事实已经很清楚，这件事不是偶发的，它并不是一起孤立的事件。

surprisingly

adv. 惊人地，出人意外地；

例句
Our field of vision is surprisingly wide.
我们的视野出人意料地开阔。

her

pron. (she的宾格)她，(she的所有格)她的，她，指某个国家，（一艘）船；

例句
There was a terrible sadness in her eyes...
她眼神中流露出深深的悲伤。

teacher

n. 教师，教员，老师，先生，[航]教练机；

例句
He was now a teacher and a respectable member of the community.
他现在是一位教师，并且是社区内受人尊敬的一员。

is

vt.& vi. 是（be的三单形式；n. 存在；

例句
Bollinger 'RD' is a rare, highly prized wine.
博林格RD香槟是一种名贵的备受推崇的葡萄酒。

getting

n. 获得（物），利益；v. 得到( get的现在分词 )，抓住，说服，受到（惩罚等）；

例句
Despite considerable pain she has been getting out and about almost as normal...
尽管还很痛，她已经基本上行动如常。

irritated

adj. 恼怒的，生气的；v. 使发怒( irritate的过去式和过去分词 )，使急躁，使感到不适，使疼痛；

例句
He felt irritated and strangely fragile, as if he were recovering from a severe bout of flu.
他感到恼火和莫名其妙的虚弱，仿佛经历了一场重感冒，正在康复。

with

prep. 和，跟，随着，关于，和…一致；

例句
A waiter entered with a tray...
侍者端着托盘进来了。