Anyway, the art of making stained glass windows developed in Europe during the Middle Ages, and was closely related to churchbuilding.
无论如何,彩绘玻璃窗工艺是在中世纪欧洲发展起来的,与教堂建筑密切相关。
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In the early 1100s a churchbuilding method was developed that reduced the stress on the walls so more space could be used for window openings allowing for large and quite elaborate window designs.