a mental representation of some haunting experience
同义词：ghost, shade, spook, specter, spectre
wraith详细解释
wraith n.（名词）An apparition of a living person that appears as a portent just before that person`s death.灵魂出窍，亡魂显现：活着的人在其临死前出现的作为预兆的鬼魂The ghost of a dead person.幽灵：死人的鬼魂Something shadowy and insubstantial.幻影：像影子的和虚幻的东西 来源：[Origin unknown] [来源不明]
