畳の廊下階段錯視・・・フラットな廊下なのだが、段差があるように見える。 Step-like floor illusion: A flat floor appears to have some steps.
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畳の廊下階段錯視・・・フラットな廊下なのだが、段差があるように見える。 Step-like floor illusion: A flat floor appears to have some steps.