So, for example, the walls in the Alhambra -- I can take all of these tiles, and fix them at the yellow place, rotate them by 90 degrees, put them all back down again and they fit perfectly down there.
那么，例如，阿尔罕布拉的墙壁。 我可以把所有的这些瓦片拿起来，把他们放在这个黄色的地方， 并把它们旋转九十度， 再把他们都放回去，它们非常吻合。