Monogamy is used to refer to the state or custom of having a sexual relationship with only one partner. 单一配偶制
noun [专属名词] 一夫一妻制;[动] 单配偶,[动] 单配性
In many non-Western societies, however, monogamy has never dominated. 然而,在很多非西方社会,一夫一妻制从未占主导地位。