问题描述：
二、仿照例子写出并解释称呼.例：Uncle:mother, brother father,s brother or aunt,s husband
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问题解答：
我来补答
1) niece:A daughter of one's brother or sister,or of one's brother-in-law or sister-in-law.
2) nephew:a son of one's brother or sister or of the brother or sister of one's spouse.
3) cousin:a relative with whom a person shares one or more common ancestor(s) (other than a parent,child/descendant,sibling,child/descendant of a sibling,or sibling of a parent/ancestor).
4) sibling:one of two or more individuals having one or both parents in common
5) A parent in law:a person who has a legal affinity with another by being the parent of the other's spouse
6) aunt:a person who is the sister or sister-in-law of a parent.
