它的直接作用就是将同辈亲属的长幼次序分出来，或者将上下行辈的关系示明。
Their direct role is to follow seniority order in the relatives of the same generation, or to clearly indicate the relationships between the persons of different generations.
它的直接作用就是将同辈亲属的长幼次序分出来，或者将上下行辈的关系示明。
Their direct role is to follow seniority order in the relatives of the same generation, or to clearly indicate the relationships between the persons of different generations.
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