a long story
That's a long story.
Como dije, es una larga historia.
As I said, it's a long story.
La suya es una respetable familia con una larga historia detrás.
His is a respectable family with a long history behind it.
He told me a long story.
Prefiero aprender lenguas que tengan una larga historia.
I prefer to learn languages that have a long history.
Debo concentrarme, es una larga historia.
I need to concentrate, it's a long story.
— It (Eso) (2017)