1
- a set of two things used together or regarded as a unit一双, 一对, 一副：
a pair of gloves
一副手套
a pair of shoes.
一双鞋。
1.1
- an article or object consisting of two joined or corresponding parts not used separately（两个相同部分组成的）一条; 一把：
a pair of jeans
一条牛仔裤
a pair of scissors
一把剪刀
she resolved to buy him a new pair.
她决定给他买一条新裤子。
1.2
- two playing cards of the same denomination对子（指两张同点的纸牌）：
Jacobs had two pairs.
雅各布有两个对子。
1.3
- two people related in some way or considered together一对; 俩人（指相关的两个人）：
a company run by a pair of brothers
由兄弟俩管理的一个公司
get out, the pair of you, before I change my mind
你们俩趁我还没有改变主意给我滚出去
students work alone or in pairs.
学生独立学习或两人一组学习。
1.4
- the second member of a pair in relation to the first（成对物的）另一只; （搭档的）另一人：
each course member tries to persuade his pair of the merits of his model.
每个赛车手都试图使他的搭档相信他那种型号赛车的优点。
1.5
- a mated couple of animals（动物）交配的一对：
76 pairs of red kites.
76对红鸢。
1.6
- two horses harnessed side by side两匹并排驾车的马。
1.7
- either or both of two members of a legislative assembly on opposite sides who absent themselves from voting by mutual arrangement, leaving the relative position of the parties unaffected（议会中）相约放弃投票权的敌对两党的两名议员（或其中一名）。
with obj.(常作be paired)
1- join or connect to form a pair使成对; 给…配对：
a cardigan paired with a matching skirt.
配有很相称的裙子的开襟羊毛衫。
1.1
- no obj.(of animals) mate（动物）交配：
individuals pair later in the season for breeding in the following year.
单居动物会在季节的晚些时候寻偶以便在来年繁殖下一代。
1.2
- no obj.
pair off/up
form a couple使成对; 配对： Rachel has paired up with Tommy.
雷切尔和汤米配成了一对。
1.3
- give (a member of a legislative assembly) another member as a pair, to allow both to absent themselves from a vote without affecting the result使（敌对两党的两名议员）组成不投票的一对。
短语
pair of hands
- used in reference to a person seen in terms of their participation in a task一起做某事的人, 帮手：
we can always do with an extra pair of hands.
我们从不反对多一个人帮忙。
派生词
pairwise
adjective & adverb词源
Middle English: from Old French paire, from Latin paria 'equal things'， neuter plural of par 'equal'. Formerly phrases such as a pair of gloves were expressed without of， as in a pair gloves （compare with German ein Paar Handschuhe）.