采用同方向之螺线编织而成。

Spirals wound in the same direction Are arranger.

但这些音乐厅的内墙都有很多装饰，很多水泥装饰物，比如雕像，这些装饰物能有效传播声音，从不同方向反射声音。

But they all have a lot of decorations on the walls inside, lots of ornamental plasterwork like statues, which distribute sound very efficiently, reflecting it in all different directions.