求翻译：北京建筑有四合院基调。 四合院是老北京普遍的民居形式。自元代正式建都北京，大规模规划建设都城时起，四合院就与北京的宫殿、衙署、街区、坊巷和胡同同时出现了，北京四合院虽为居住建筑，却蕴含着深刻的文化内涵，是中华传统文化的载体。是什么意思？

Beijing building courtyard tone. The courtyard is the common form of residential areas of old Beijing. Starting from the formal capital of Yuan Dynasty, Beijing, large-scale planning and construction of capital city, courtyard with Beijing's Palace, Government Office, blocks, Square Lane and the all

正在翻译，请等待...