The side walls feature a double stretcher-stretcher bond that results in a pattern of diagonal perforations, following the direction of the sloping site.
侧墙以粘结在一起的双层横木为特色，形成了一种斜向贯穿的图案，顺应倾斜的基地的方向。
2
Or have they simply been adjusting them, to maintain the downward sloping trend line of the 30 year bond?