雜種繁殖
interbreeding
n 1: (genetics) the act of mixing different species or varieties
of animals or plants and thus to produce hybrids [syn: {hybridization},
{hybridisation}, {crossbreeding}, {crossing}, {cross},
{hybridizing}]
2: reproduction by parents of different races (especially by
white and non-white persons) [syn: {miscegenation}, {crossbreeding}]