你就能创造封闭的循环，像彭罗斯楼梯。
That lets you create closed loops , like the Penrose steps .
在梦里你可以把建筑改造成不可能的形状你就能创造封闭的循环像彭罗斯楼梯永恒楼梯
In a dream , you can cheat architecture into impossible shapes . That lets you create closed loops , like the Penrose Steps . The infinite staircase .
彭罗斯楼梯