The two unequal shorter sides of the curvilinear trapezoid of each building change their geometry every twofloors.
每隔两层，每幢建筑曲线梯形的两条不相等的短边就会改变其几何形状。
2
Both a staircase and a lift connect the twofloors with an enclosed terrace on the roof.
一道楼梯和一台电梯连接两层楼和封闭的屋顶平台。
3
Lifts stopped working, so that even if you were lucky enough not to be trapped between twofloors, you had the unpleasant task of finding your way down hundreds of flights of stairs.