A poor man who takes a rich wife has a ruler, not a wife.是什么意思？

A poor man who takes a rich wife has a ruler, not a wife.

穷汉娶富妻,必受老婆欺.

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。

man

n. 男人，人类，男子汉，雇工；vt. 使振作，操纵，给…配置人员，在…就位；int. （表示惊讶、气愤等）嘿，天哪；

例句
Derek was taken aback when a man answered the phone.
德里克吓了一跳，居然是一个男的接的电话。

who

pron. 谁，什么人，关系代词，有先行词，孰；

例句
The last French king was Louis Philippe, who abdicated in 1848.
法国末代国王是1848年逊位的路易·菲力普。

takes

v. 拿( take的第三人称单数 )，接受，学习，取得；

例句
Acceleration to 60 mph takes a mere 5.7 seconds.
加速到时速60英里只需要5.7秒。

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。

wife

n. 妻子，太太，夫人，老婆，已婚妇女；

例句
His wife was sentenced to seven years imprisonment for aiding and abetting him...
他的妻子作为他的从犯被判入狱7年。

has

v. 有( have的第三人称单数 )，（亲属关系中）接受，拿，买到；

例句
...the operation a patient has had.
病人做过的手术

ruler

n. 尺，直尺，统治者；

例句
...the former military ruler of Lesotho...
莱索托的前军事统治者

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。