polyandry
[ˌpɑ:liˈændri]
n.
一妻多夫（制）;
一妻多夫制;
多雄性;
一雌多雄;
例句:
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This keeps land, yaks and money in the family, but not all mountain dwellers practice polyandry.
来自BBC
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Polyandry alone is lacking - it took human beings to achieve that.
所缺乏的只是多夫制,这一点只有人类才能做得出来.
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Men live in polygyny, while women in polyandry.
男子过着多妻制的生活，而妇女则过着多夫制的生活。
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McLennan knew only three forms of marriage: polygyny, polyandry and monogamy.
麦克伦南只知道三种婚姻形式: 一夫多妻制, 一妻多夫制和个体婚制.