Wilson's mother which hovered like an ectoplasm on the wall.

那幅像一片胚叶似模糊清放大照片就是他摄。

I mean, the head of Harvard psychology was also the head of the American Society for Psychical Research. Charles Richet was a Nobel Prize-winning physicist who coined the term " ectoplasm."

我意思是， 哈佛心理学责人也是美国心理研究协责人。 Charles Richet 是一位获得诺贝尔奖物理学家， 他创造了“外质” 一词。