Numeral + 对 + 夫妇
The noun 夫妇 (fūfù) means "married couple" or "husband and wife" and is a formal term used to refer to two people in a marriage. It is more formal than 夫妻 (fūqī) and is commonly seen in written and news contexts.
这对夫妇已经在这个小区住了十年。
Zhè duì fūfù yǐjīng zài zhè ge xiǎoqū zhù le shí nián.
This couple has lived in this neighborhood for ten years.
一对年轻夫妇带着孩子在公园散步。
Yī duì niánqīng fūfù dàizhe háizi zài gōngyuán sànbù.
A young couple was walking in the park with their child.
王氏夫妇热情地招待了我们。
Wáng shì fūfù rèqíng de zhāodài le wǒmen.
Mr. and Mrs. Wang hospitably entertained us.