Now, it turns out this is actually based on this set of Penrose tiles, which are reducible to these shapes.

它其实是基于这组彭罗斯块，最终可以简化为这些图形。

Only now the tents are gone, replaced by multistory cinder block tenements.

只是现在帐篷不了， 取而代之的是多层煤渣块公寓。

He built his new house like a vault, with thick walls made from concrete blocks to protect his writing and papers from fire.

他将自己的新房子建造得像一个拱顶，厚厚的墙壁由混块制成，以保护他的文字和文件免受火灾。