在上海，没有顶楼隔热或双层玻璃的建筑不断涌现。
Buildings in Shanghai continue to spring up without loft insulation or double glazing.
下一步是生产窗和隔热层，之后是安装预制浴室和厨房模块，最后这个单元被起重机吊起来放置在这座建筑的相应位置上。
Windows and insulation came next, and then prefabricated bathrooms and kitchen modules were installed. Finally the unit was lifted by crane into position on the building.
这包括对大量公共建筑进行翻修，并加装隔热层。
This involved retrofitting - installing lagging - in large Numbers of public buildings.
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