a pair of与pair的区别都是”一双，一副，一条“的意思、那怎么区别？作用是什么？

a pair of与pair的区别都是”一双，一副，一条“的意思、那怎么区别？作用是什么？ a pair of 与 a piece of 的区别 a new pair of sock s与a pair of new sock s有区别吗 a pair of 和 pair of 用法的区别在哪里? a pair of和a piece of的区别 a couple of 和 a pair of 的具体区别, a pair of glasses和glasses区别 都是眼镜的意思时 a pair of的中文翻译 a couple of与a pair of的区别这两个怎么区别啊?比如：I found a ____ of socks in the bedroom but they don't make a pair.应该填couple还是pair呢?为什么? pair与a pair of有啥区别.The teacher asks his students to practice English in——（一对）这里为什么只能用pair 关于pair的用法a pair of socks 中,主语是pair还是socks? a pair of shoes a pair of couple a pair of a pair of Need a pair of I want to buy a pair of shose ,but i do not know A which one to buy B which pair to buyone和pair的区别 a couple of ,a piece of ,a pair of ,a bit of 的区别