imperishable
adjective literary uk/ɪmˈper.ɪ.ʃə.bəl/ us/ɪmˈper.ɪ.ʃə.bəl/
永存的，不朽的
lasting for ever, or never becoming weaker with age
Synonyms: abidingdurableenduringindelibleindestructibleineradicable ingrainedlastinglong-lastingpermanent
Compare: perishable