pair off

US /peər ɔf/
UK /peər ɔf/
"pair off" picture
1.

ペアを組む, 組になる

to form a pair or to cause people or things to form pairs

:
The students were asked to pair off for the group activity.
生徒たちはグループ活動のためにペアを組むように言われた。
The dancers began to pair off as the music started.
音楽が始まると、ダンサーたちはペアを組み始めた