"The two old friends paired off"
"This fact is coupled to the other one"
"Matchmaker, can you match my daughter with a nice young man?"
"The student was paired with a partner for collaboration on the project"
"Pair these numbers"
"Birds mate in the Spring"
despair n. 绝望;使人绝望的人（或事物）; vi. 绝望;
disrepair n. 失修，破损;
impair vt. 损害，削弱;
repair vt. 修理;纠正;恢复;弥补; n. 修理;修理工作;维修状态;经修理的东西;