Penrose stairs

noun

An impossible loop of endlessly ascending and descending stairs, or an optical illusion appearing to depict such a loop.

The Penrose stairs is an optical illusion that creates a never-ending staircase.

意味（1）

An impossible loop of endlessly ascending and descending stairs, or an optical illusion appearing to depict such a loop.

For quotations using this term, see Citations:Penrose stairs.