Many of the prisoners were roughly handled; some were killed.是什么意思？

Many of the prisoners were roughly handled; some were killed.

很多囚犯受到了粗暴的对待；有些甚至被整死了。

many

adj. 许多，多的；pron. （与复数动词连用）大多数人；

例句
There are many people who still find the act of abortion abhorrent.
仍有很多人对堕胎行为表示厌恶。

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。

the

art. 指已提到的人（物），指说话人与听者已知的人（物），用于独一无二的事物前，与形容词最高级和序数词连用；

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

prisoners

n. 囚徒( prisoner的名词复数 )，俘虏，被夺去自由的人[动物]等；

例句
The regulations were relaxed and the prisoners could get out and about a bit.
规定有所放宽，犯人可以出去短暂放风。

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。

roughly

adv. 粗略地，大体上，大致上，粗暴地；

例句
...the dictum that it is preferable to be roughly right than precisely wrong...
有句格言说道，大致对总比完全错要好

handled

adj. 有把手的，有把柄的；v. 操作( handle的过去式和过去分词 )，容易╱难以)驾驶，操纵，行动；

例句
Be very careful with this stuff, it can be dangerous if it isn't handled properly...
这东西一定要小心,稍不注意的话就会有危险。

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。

killed

adj. 被杀死的，断开的；v. 杀死( kill的过去式和过去分词 )，使停止[结束，失败]，破坏，减弱，抵消，使痛苦，使受折磨；

例句
Six passengers were killed in the accident.
六名乘客在车祸中丧生。