最終更新日：2024/08/01
The Penrose stairs is an optical illusion that creates a never-ending staircase.
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The Penrose stairs is an optical illusion that creates a never-ending staircase.
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The Penrose stairs is an optical illusion that creates a never-ending staircase.
The Penrose stairs is an optical illusion that creates a never-ending staircase.
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