And one of the reasons why he designed roofs this way is because it's -- he found it fascinating that you could build such a strong structure that's made of so few materials and can be supported by so few points.
他以这种方式设计屋顶的原因就是： 他发现其魅力就在于你可以获得如此坚固的结构。 它需要的材料是如此之少，并且仅需要数个支撑点。