Some of them were impudent and insulting.是什么意思？

Some of them were impudent and insulting.

他们当中的一些人放肆无礼,目中无人。

some

det. 一些，某个，部分，相当多的；pron. 一些，若干，（数量不确切时用）有些人；adv. 大约，有点，稍微；

例句
It's not a question of some abstract concept.
这不是某个抽象概念的问题。

of

prep. 关于，属于…的，由…制成；aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气]；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

them

pron. 他们，她们，它们；

例句
I take care of them to the best of my abilities...
我尽我所能地照顾他们。

were

be的过去时复数和第二人称单数形式，有时代替 was,用于条件从句、动词 wish 之后等；

例句
Shops, houses, and vehicles were set ablaze.
店铺、房子和车辆全都陷于火海。

impudent

adj. 粗鲁的，无礼的，无耻；

例句
Some of them were impudent and insulting.
他们当中的一些人放肆无礼,目中无人。

and

conj. 和，与，而且，于是，然后，因此；

例句
I spend a lot on expensive jewelry and clothing...
我花很多钱购买昂贵的首饰和衣服。

insulting

adj. 出言不逊的，侮辱的，无礼的；v. 侮辱，冒犯( insult的现在分词)；

例句
The article was insulting to the families of British citizens...
那篇文章侮辱了英国公民家庭。