Definition
to start a romantic or sexual relationship with someone
建立情侣关系；成为一对
At the dance party, many people paired off with their partners.
在舞会上，许多人与他们的伴侣结成对。
She and he began to pair off during their vacation.
她和他开始在假期中结为情侣。
Over time, the two friends gradually paired off as a couple.
随着时间的推移，这两个朋友逐渐结为情侣。