couples
A couple is two people who are married, living together, or having a sexual relationship.
The couple have no children.
这对夫妇没有孩子。
Burglars ransacked an elderly couple's home.
窃贼们洗劫了一对老夫妇的家。
A couple is two people that you see together on a particular occasion or that have some association.
as the four couples began the opening dance.
随着4对舞伴跳起开场舞蹈。
A couple is two or approximately two when it is clear what you are talking about.
I've got a couple that don't look too bad.
我有几个,看上去还不错。
If you refer to a couple of people or things, you mean two or approximately two of them, although the exact number is not important or you are not sure of it.
a few , several
Across the street from me there are a couple of police officers standing guard.
我所在的街对面有一两个警察在站岗。
I think the trouble will clear up in a couple of days.
我想几天内麻烦就会消除。
a small town in Massachusetts, a couple of hundred miles from New York City.
马萨诸塞州的一个小镇,距纽约市两百多英里。
couples , coupling , coupled
If you say that one thing produces a particular effect when it is coupled with another, you mean that the two things combine to produce that effect.
a problem that is coupled with lower demand for the machines themselves.
一个问题外加对机器本身需求量的减少。