couples of 和 a couple of 的区别要具体说明,最好有举例

一般没有couples of的用法：
a couple of 少数几个
be coupled with 与结合
go in couples 成双成对
hunt in couples 协力
run in couples 协力
coupled with 外加
in a couple of shakes 刹那间
It is not every couple that is a pair 成双未必配对.