They seem an ill-assorted couple.是什么意思？

They seem an ill-assorted couple.

他俩似乎不般配。

they

pron. 他/她/它们，人们，大家，政府，当局，她们；

例句
The storms had abated by the time they rounded Cape Horn.
他们绕过合恩角时，暴风雨已经减弱。

seem

v. 好像，仿佛，似乎，装作，看来好像；

例句
We are scared to abandon ourselves to our feelings in case we seem weak or out of control.
我们不敢放纵自己的情感，以免显得太过软弱或缺乏自制。

an

art. 一（在元音字母前代替不定代词a），一任一某一，一个；

例句
He started eating an apple...
他开始吃苹果。

couple

n. 对，双，配偶，夫妻，<口>几个，两三个；vt.&vi. 连在一起，连接，成双，结婚，性交，交配；

例句
No-one personally acquainted with the couple was permitted to talk to the Press...
任何与这对夫妇有私交的人都不准和新闻界谈话。