n.

1. 关系，关联；人际关系[U][C][（+between/to/with）]
   The children learned about the relationship between the moon and the tides.

   孩子们弄懂了月球与潮汐的关系。

2. 亲属关系；姻亲关系[U][（+to）]
3. 风流韵事；恋爱关系[C]
   What is your relationship to the victim?

   你是受害者的什么人？

n.

1. the way in which two or more people or things are connected, or the state of being connected.
   ▸the way in which two or more people or groups regard and behave towards each other.
2. an emotional and sexual association between two people.