has been lost
But it has not been lost.
— El señor de los anillos: El retorno del rey (2003)
Tom no se ha perdido ningún concierto de Mary.
Tom hasn't missed any of Mary's concerts.
My son is lost.
Después de cuarenta años, la tradición se ha perdido por completo.
After forty years, the tradition has been completely lost.
— Comer, beber, amar (1994)
Se ha perdido uno de los cuchillos.
One of the knives has gone missing.
Creo que este hombre se ha perdido.
I think this man has lost his way.
Nothing has been lost.