She sat expressionless, carefully taking notes...是什么意思？

She sat expressionless, carefully taking notes...

她坐在那儿面无表情，认真记着笔记。

she

pron. 她，它；

例句
Her lover walked out on her after she had aborted their child.
她的情人在她打掉胎儿后甩了她。

sat

v. 坐(sit的过去式，过去分词)；n. SAT美国学术能力评估测

例句
He sat in an adjacent room and waited...
他坐在隔壁房间里等候。

expressionless

adj. 无表情的；

例句
That expressionless face had seemed deep and mysterious.
那张毫无表情的脸看上去深沉而又神秘。

carefully

adv. 小心谨慎地，警惕地，仔细地，周密地；

例句
All through lunch he had carefully avoided the subject of the house.
整个午饭期间，他一直在小心翼翼地回避房子的话题。

taking

adj. 迷人的，引人注目的，会传染的；n. 引人注目，迷人，取得，营业收入；v. 拿（ take的现在分词 ），接受，取得，学习；

例句
...an abortive attempt to prevent the current President from taking office.
企图阻止现任总统连任的失败尝试

notes

vt. 记下，对…加注释；n. 注意( note的名词复数 )，笔记，单音，特征；

例句
He wrote a few more notes on the board.
他在黑板上又写了几条注释。