what they do
You do what everyone else does.
Los doctores saben lo que hacen.
The doctors know what they're doing.
— La gran enfermedad del amor (2017)
I've seen what they do.
Ellos siguen con la vida sin pensar en lo que hacen.
They go on with their lives without thinking about what they are doing.
Dios, perdónalos, porque no saben lo que hacen.
God, forgive them, for they do not know what they are doing.
No importa lo que hacen, pues es un mal arte.
It doesn't matter what they do, because it's bad art.
— El brazo de brillantes (1969)
That's what brothers do.