This illusion first discovered in 1870 is characterized by the "ghostlike" intermittent appearance of lightly colored gray dots that seem to connect the white surfaces and the black background.

这个错觉是在1870年首次发现的，其特点是：“诡异的”浅灰色圆点间歇性的出现，似乎连接着白色的表面和黑色的背景。

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There she moves, a vaguely ghostlike figure, among inhabitants who are themselves subject to cruel griefs.

CNN: 'The Leper's Companions'

The 83-year-old L.K. Advani, who led the party in the 2009 election, also lingers, ghostlike, hoping for another pop at being prime minister.

ECONOMIST: Indian politics

But what does it mean when you go from Bill and Dave in shirtsleeves sitting beside you on a bench in the company cafeteria to a ghostlike Carly floating on a television screen?

FORBES: Great Garages