However, open-styled stairs increase the contact surface of the building and outside air, and this affect energy-saving of the building.
然而，开敞式楼梯间增加了建筑物与室外空气接触的表面积，对建筑节能有一定影响。
Considering factors such as ventilation and economy in Hot-summer and Cold-winter Region, the stairs of residences are usually designed to be open-styled.
夏热冬冷地区住宅建筑考虑通风和经济等因素，楼梯间多设计为开敞式。
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