/peə(r) ||; pɛr/noun[C] 1 two things of the same type that are used or worn together 一对；一双: a pair of shoes/gloves/earrings 一双鞋子；一双手套；一对耳环
2 a thing that consists of two parts that are joined together 一件由相连的两部份组成的东西: a pair of scissors/glasses/trousers 一把剪刀；一副眼镜；一条裤子
3 [with.p] two people or animals that are doing sth together 一起做某事的两个人或两只动物: These boxers have fought several times, and tonight the pair meet again. 这两名拳击选手过去多次交手，今晚将再次相遇。 ☞We use couple to refer to two people who are married or in a relationship together. couple指夫妇或两个相爱的人。
in pairs two at a time 成对；成双:
These earrings are only sold in pairs. 这些耳环只成对出售。The students were working in pairs. 学生们两人一组学习。