没错，BW有一个强大的OLAP引擎，但是当时没有人谈到数据仓库。 数据仓库是后来加上的，可是它的真正含义并没有被意识到。
Yes, it comes with powerful OLAP engine, but no one talked about BW as a data warehouse at that time; it came later, but it's true meaning is still not recognized.
当一个订单下达，订单先通过气压管订单先送到中心仓库，中心仓库派送物品到买家家中。
When an order is taken, it is sent to a central warehouse which dispatches the goods to the buyer's home by pneumatic tube.
推送操作能将本地信息推送到一个远程的仓库，而操作能将远程仓库的信息复制到本地仓库。
A push transfers some local information to a remote repository, and a pull copies remote information to the local repository.
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