She had a natural courtesy combined with an unshakable conviction.是什么意思？

She had a natural courtesy combined with an unshakable conviction.

她既有天生的谦恭有礼的举止,又有坚定不移的信念.

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。

had

v. 有（ have的过去式和过去分词 ），（亲属关系中）接受，拿，买到；

例句
He claimed that his parents had abandoned him...
他声称父母遗弃了他。

natural

adj. 自然的，物质的，天生的，不做作的；n. 自然的事情，（生来的）白痴，[乐]（风琴等的）白键；

例句
There is a natural affinity between British and Asian women.
英国女性和亚洲女性之间有一种自然的亲近感。

courtesy

n. 谦恭有礼，礼貌，请安，有礼貌的举止[言词]，承蒙；adj. 殷勤的，出于礼节的；

例句
He didn't have the common courtesy to ask permission.
他连邀准这种最起码的礼貌都没有。

combined

adj. 结合的，<化>化合的，[数]组合的；v. （使）联合(combine的过去式和过去分词)；

例句
If improved education is combined with other factors dramatic results can be achieved...
如果把改良的教育体系和其他的因素结合起来，会取得非常惊人的效果。

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。

an

art. 一（在元音字母前代替不定代词a），一任一某一，一个；

例句
He started eating an apple...
他开始吃苹果。

unshakable

adj. 不可动摇的，坚定不移的，雷打不动，铁；

例句
He had an unshakable premonition that he would die.
他有一种强烈的预感，觉得自己会死。

conviction

n. 定罪，说服，确信，信念；

例句
It is our firm conviction that a step forward has been taken...
我们坚信已经向前迈进了一步。