The East Window is a wonder of medieval glazing.东窗是中世纪玻璃安装工艺的奇迹。The noise of hammering was dulled by the secondary glazing.因为隔着双层玻璃，锤子的敲打声变低沉了。You should ensure yourself against loss of heat by having double glazing.你应该装...
The East Window is a wonder of medieval glazing.东窗是中世纪玻璃安装工艺的奇迹。The noise of hammering was dulled by the secondary glazing.因为隔着双层玻璃，锤子的敲打声变低沉了。You should ensure against loss of heat by having double glazing.你应装双层玻璃以免散热....