we talk for a couple of

题目

we talk for a couple of
只见过some hours,several hours,hours,就是没见过a couple of hours,
我理解这句话意思是"我们谈了好长时间",但为什么不用hours,而用了a couple of hours?

答案

a couple of 几个 一般多是2,3,4个左右
这个用法也很常见的啊,也是一样的意思,下次记住了．
we talk for a couple of hours
我们谈论了好几个小时．