The exterior surface of a curtain wall should be made of a durable material, capable of lasting as long as the building. Maintenance should be a minimum.是什么意思_The exterior surface of a curtain wall should be made of a durable material, capable of lasting as long as the building. Maintenance should be a minimum.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句