n.

1. 一对，一双，（两部分形成的）一件[C][（+of）]
   George needed a new pair of shoes.

   乔治需要一双新鞋。

2. 一对（夫妻、情侣、舞伴等）[C][G]
   That pair are always quarreling.

   那对夫妻老是争吵。

vi.

1. 成对，配对
   Birds often pair for life.

   鸟儿常常终生配对。

2. 组成一对一对
3. （动物）交配
4. 结婚

vt.

1. 使成对；使成配偶；使交配
   They paired John and Mary for the dance.

   他们将约翰和玛丽配对成舞伴。

2. 把……组成一对一对
3. 为……配搭档[（+with）]

n.

1. a set of two things used together or regarded as a unit.
2. an article consisting of two joined or corresponding parts.
3. two people or animals related in some way or considered together.
   ▸two members of a legislative assembly on opposing sides who absent themselves from voting by mutual arrangement, in order to maintain the relative position of the parties.

v.