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married couple; husband and wife; man and wife
「夫婦」 has another reading with different meanings.
この夫婦は結婚して十年になります。
This married couple has been married for ten years.
あの夫婦は毎朝散歩をしている。
That couple takes a walk every morning.
あの夫婦はよく旅行をしています。
That couple often travels.