石灰石的建筑紧密地搭靠着，就如书架上的书，很多屋顶成斜角，厚厚的门，生锈的铁栏杆阳台。
The limestone buildings were packed tight, like books on a shelf, many with pitched roofs, thick doors, and rusted iron verandas.
首先，指出了设计适宜的坡屋顶倾斜角度，可以节省规划用地的方法；
First of all, it put forward the method by designing suitable slope angle of the pitched roof that can save the planning place.
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