"he looked like he had seen a ghost" "it aroused specters from his past"
A tall wraith of a woman looking as though any wind might blow her away.
The mist was maddeningly slow to lift...Then, quite suddenly the drifting wraiths were gone.
牛津高阶第八版
美国韦氏词典
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维基百科 (自由的百科全书)