资料来源 : pyDict

忘不了的,令人难忘的

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Unforgettable \Un`for*get"ta*ble\, a.
   Not forgettable; enduring in memory.

         Pungent and unforgettable truths.        --Emerson.

资料来源 : WordNet®

unforgettable
     adj : impossible to forget [ant: {forgettable}]