marriage to a person belonging to a tribe or group other than your own as required by custom or law
同义词：intermarriage
exogamy详细解释
ex.og.a.my n.（名词）【复数】ex.og.a.mies The custom of marrying outside the tribe, family, clan, or other social unit.异族通婚：同外部部落、家庭、部族或其他社会单元通婚的风俗Biology The fusion of two gametes that are not closely related.【生物学】 异系结合：无密切亲缘关系的两种生物的结合 【引伸】 ex.ogam.ic
