称谓relatives appellation terms：1.祖父grandfather2.祖母grandmother3.外祖父grandfather-in-law4.外祖母grandmother-in-law5.父亲father6.母亲mother7.继父Step father8.继母Step mother9.岳父/公公father-in-law10.岳母/婆婆mother-in-law11.叔叔uncle12.阿姨aunt13.妻子wife14.丈夫husband15.姑子/姨子/嫂子/弟媳sister16.内兄、弟/大伯子/小叔子/姐夫/妹夫brother17.堂兄弟/姐妹；表兄弟/姐妹cousin18.侄子/外甥nephew19.侄女/外甥女niece
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