haunting
 (a.)常浮現于腦海中的,不易忘懷的
 Haunt v. t. [imp. & p. p. Haunted; p. pr. & vb. n. Haunting.]
 1. To frequent; to resort to frequently; to visit pertinaciously or intrusively; to intrude upon.
    You wrong me, sir, thus still to haunt my house.   --Shak.
    Those cares that haunt the court and town.   --Swift.
 2. To inhabit or frequent as a specter; to visit as a ghost or apparition; -- said of spirits or ghosts, especially of dead people; as, the murdered man haunts the house where he died.
    Foul spirits haunt my resting place.   --Fairfax.
 3. To practice; to devote one's self to. [Obs.]
    That other merchandise that men haunt with fraud . . . is cursed.   --Chaucer.
    Leave honest pleasure, and haunt no good pastime.   --Ascham.
 4. To accustom; to habituate. [Obs.]
    Haunt thyself to pity.   --Wyclif.
 haunting
      adj 1: continually recurring to the mind; "haunting memories"; "the
             cathedral organ and the distant voices have a haunting
             beauty"- Claudia Cassidy [syn: persistent]
      2: having a deeply disquieting or disturbing effect; "from two
         handsome and talented young men to two haunting horrors of
         disintegration"-Charles Lee