Especially when the Poyais envoy was related by marriage to Simon-freaking Bolivar.

尤其是波亚斯使节和可利瓦有姻亲关系。

The person he marries becomes your aunt;even though you're not related by blood, you're related by marriage.

他娶人成了你妈； 虽然你们没有血缘关系，但你们有姻亲关系。

It's an honorific I came up with to describe a woman who's carrying my future niece or nephew but is not related to me by law.

这是我想出来敬称，用来形容怀了我未来侄子或侄女，但和我没有姻亲关系女性。

So, I am related to my wife's sister not by blood, we don't have any common parents or grandparents, but I am related to her by marriage because she is my sister-in-law, she is my wife's sister.

所以，我和我老婆姐姐没有血缘关系，我们没有共同父母或祖父母， 但我和她有姻亲关系， 因为她是我嫂子，她是我老婆姐姐。