结成 + 夫妻
The noun 夫妻 (fūqī) means 'husband and wife' or 'married couple.' It refers to two people who are married to each other. It is a formal term commonly used in both written and spoken Chinese, often appearing in the phrase 结成夫妻 (to become husband and wife).
他们是一对恩爱的夫妻。
Tāmen shì yí duì ēn'ài de fūqī.
They are a loving couple.
这对夫妻已经结婚二十年了。
Zhè duì fūqī yǐjīng jiéhūn èrshí nián le.
This couple has been married for twenty years.
夫妻之间最重要的是互相信任。
Fūqī zhījiān zuì zhòngyào de shì hùxiāng xìnrèn.
The most important thing between husband and wife is mutual trust.