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set of two (one large, one small); pair (for husband and wife); his and hers (e.g. teacups)
妻夫で茶碗を選んで買うのが楽しい。
It's fun picking out rice bowls together as a couple.
妻夫の絆は年月とともに深まるものだ。
A couple's bond deepens with time.
あの妻夫は一緒に店を切り盛りしている。
That couple runs their shop together.