To betroth (children) before birth; to arrange an engagement while the children are still in the womb.
在一些古老的传说中，两位好朋友为了让友谊世代相传，曾约定指腹为亲，期待他们的后代能结为连理。
In some ancient legends, two close friends, hoping their friendship would be passed down through generations, agreed to betroth their unborn children, looking forward to their descendants becoming a married couple.
Next Idiom