我的脑袋在急促思考，我终于知道那是什么图案了，那居然是挂在百事可乐房间的龙城原始地图！
My head is hurriedly considering, I finally know that is what pattern, that is incredibly the original map of Long Cheng who hangs in the Pepsi-Cola room!
Placebase在原始地图数据顶端的层可以抽取出一个基础的服务，这样用户可能根本不会注意（除非，当然，还有性能，准确性或容量的问题）。
Placebase layers on top of raw map-data would abstract a new underlying service so that users may not even notice it (unless, of course, there are performance, accuracy or capability issues).
原始的存储库和其副本均包含同样的数据地图对象，这是因为数据地图是不能修改的，这一点在本文稍后的部分介绍。
Both the original repository and its copy will contain the same data map objects, which is correct because data maps cannot be modified, as you'll see later in this article.
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