a person whom one knows but is not a close friend

相识, 熟人
a group of people who come together for a particular purpose, often because they share common interests or beliefs

团队, 乐队
sexual intercourse involving a married person and someone other than their spouse

通奸, adultery (noun)
a sexual relationship between two people in which at least one of them is already committed to someone else

婚外情, 私情
someone who helps or supports someone else in certain activities or against someone else

盟友, 助手
a blood relative who lived a long time ago, usually before one's grandparents

祖先, 先辈
the people that a person is descended from

祖先, 血统
a subdivision or a group of members of an extended family sharing the same ancestors

支系, 家族分支
a large group of people who are related to each other

家族, 宗族
(of a child or parent) related through adoption

收养的, 采用的
to have a secret romantic or sexual relationship with someone other than one's own partner

背叛, 出轨
showing a level of love or care that one would only expect a brother to have

手足之情的, 兄弟般的
someone who shares the same blood with a specific person who lived many years ago

后裔, 子孙
having a connection that is not close or direct, as in a remote familial or social relationship

遥远的, 远亲的
one's closest living relative or relatives

法定亲属, 近亲
related to or characteristic of a mother and motherhood, especially during and following childbirth

母性的, 母亲的
having qualities or behaviors typically associated with a father, particularly in a caring, supportive, or protective manner

父爱的, 父亲般的
an individual's religious or ethnic background that is passed down to them from their ancestors

文化遗产, 传统背景
to interact and spend time with someone or a group of people

交往, 交际
