n.二分体，二联体，并矢，并向矢量
adj.二数的

The relationship between the president and vice president is a dyad.
总统和副总统之间的关系是一个二元组。
In sociology, a dyad is the smallest possible social group.
在社会学中，二元组是最小的社会群体。
The parent-child dyad is a fundamental unit of family structure.
父母-孩子二元组是家庭结构的基本单位。
A dyad can also refer to a pair of interacting individuals.
二元组也可以指相互作用的一对个体。
The teacher-student dyad is an important aspect of education.
师生二元组是教育的重要方面。
Friendship is often viewed as a dyadic relationship.
友谊经常被视为一种二元关系。
Dyads can be studied in various contexts, such as communication or decision-making.
可以在各种情况下研究二元组，如通信或决策。
Marital dyads are a common focus of research in psychology.
婚姻二元组是心理学研究的常见焦点。
Business partnerships can be considered as economic dyads.
商业伙伴关系可以被视为经济二元组。
In international relations, alliances can be seen as diplomatic dyads.
在国际关系中，联盟可以被视为外交二元组。