一夫一妻的
Monogamous \Mo*nog"a*mous\, a. [L. monogamus having but one wife, Gr. ?; ? single + ? marriage.] 1. Upholding, or practicing, monogamy. 2. (Bot.) Same as {Monogamian}. 3. (Zo["o]l.) Mating with but one of the opposite sex; -- said of birds and mammals.
monogamous adj : (used of relationships and of individuals) having one mate; "monogamous marriage"; "monogamous for life" [ant: {polygamous}]