怎么用英语解释a pair of 用法

Pair ---noun.
1.two things that are the same or almost the same and that are used together,a pair of shoes,a pair of gloves,a pair of earrings 2.a thing that consists of two parts that are joined together:a pair of scissors,a pair of glasses,two pairs of pants
( copy from dictionary)

a pair of means two or things with two parts然后多举一点例子a pair of shoes, a pair of glasses……