...the oppression of the 19th-century poor by the rich.是什么意思？

...the oppression of the 19th-century poor by the rich.

19世纪富人对穷人的压迫

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。

oppression

n. 压迫，被压迫的状态，压迫物，沉闷，苦

例句
...the bitter oppression of slavery and colonialism...
奴隶制度和殖民主义的残酷压迫

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。

poor

adj. 贫穷的，贫乏的，令人怜悯的，可怜的，匮乏的，低劣的；n. the poor 贫困者，穷人；

例句
I suppose the shock had addled his poor old brain.
我估摸这个打击已经把他那可怜的脑袋瓜搞糊涂了。

by

prep. 在…旁边，表示方式，由于，经过；adv. 经过，表示保留或保存时用，短暂拜访；

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

rich

adj. 富有的，肥沃的，丰富多彩的，油腻的；

例句
I married above myself — rich county people...
我高攀了一门亲事，是县里的富有人家。