They were an odd couple.是什么意思？

They were an odd couple.

他们是奇怪的一对。

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。

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。

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。

odd

adj. 古怪的，奇数的，剩余的，临时的；n. 奇特的事物，怪人，[高尔夫球]多于对方的一次击球；

例句
He was definitely a bit of an odd bod.
他这人确实有点怪。

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。