To strengthen existing family ties or relationships by arranging another marriage within the same family or among relatives; to marry into a family with whom one already has kinship.
为了让两个家族的关系更紧密，他们决定亲上作亲，将女儿嫁给了表哥的儿子。
To further strengthen the bond between the two families, they decided to arrange a marriage among relatives, giving their daughter to her cousin's son.
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