Each one of us, most people, have something in our life that's literally irreplaceable, in that it has value because of its history -- maybe your wedding ring, maybe your child's baby shoes -- so that if it was lost, you couldn't get it back.
Cadascú de nosaltres, la majoria, tenim alguna cosa a la nostra vida que és literalment insubstituïble, en el sentit de que té valor per la seva història. Potser el teu anell de casament, potser les sabatetes de nadó del teu fill, que si ho perdessis, no ho podries recuperar.