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

那幅像一片胚叶似的清的放大照片就是他摄的。

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."

我的意思是， 理学的负责人也是美国理研究协会的负责人。 Charles Richet 是一位获得诺贝尔奖的物理学家， 他创造了“外质” 一词。