zài / yì / xiē / lì / shǐ / shè / huì / zhōng / yī / fū / duō / qī / céng / jīng / shì / yì / zhǒng / hūn / yīn / zhì / dù在一些历史社会中,一夫多妻曾经是一种婚姻制度。In some historical societies, polygyny was once a form of marriage.