It was a system that could not endure, and agitations grew louder.是什么意思？

It was a system that could not endure, and agitations grew louder.

这个系统已经不能持续下去了, 而且噪音越来越大.

it

pron. 它，他，正好是所需的，事实[情况]；n. <美俚>傻瓜，笨蛋，<俚>绝妙的人，理想的东西，登峰造极；

例句
I suggest you leave it to an expert...
我建议你把它留给专家来解决。

was

v. 用来表示某人或某物即主语本身，用来表示某人或某物属于某一群体或有某种性质（ be的过去式 ），在，存在，不受干扰；

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

system

n. 体系，系统，制度，身体，方法；

例句
The whole system should be abolished.
整个制度应该被废除。

that

det. 那个，那；pron. 那个，那；conj. 多么，如此…以至，用于某些动词、形容词和名词后，引出各种从句；adv. 不那么，那样；

例句
...expensive make-up that we saw being advertised by a beautiful model...
我们所见的由一位漂亮模特代言的昂贵化妆品

could

aux. “can”的过去式，能够，打算，用于假设语气的条件句，用于虚拟语气的结论句；

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。

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。

endure

vt. 忍耐，容忍；vi. 持续，持久，忍耐；

例句
...unbearable pain, which they had to endure in solitude because not even the doctors could get near them.
他们不得不独自承受的无法忍受的疼痛，因为甚至连医生都无法靠近他们

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。

agitations

n. （液体等的）摇动( agitation的名词复数 )，鼓动，激烈争论，（情绪等的）纷乱；

例句
It was a system that could not endure, and agitations grew louder.
这个系统已经不能持续下去了, 而且噪音越来越大.

grew

v. 种植( grow的过去式 )，扩大，扩展，增加；

例句
One afternoon, I grew bored and actually fell asleep for a few minutes...
一天下午，我觉得有些无聊，还真的睡着了一小会儿。

louder

loud（响亮的，大声的，高声的）的比较级形式；

例句
As we got close to Broadway, we heard the sounds of revelry getting louder and louder.
我们接近百老汇时，听到人们饮酒狂欢的声音越来越大。