随着交互媒介的扩展，注意力的持续时间日益缩短。
As interactive media expands, attention spans are getting shorter and shorter every day.
中间件技术是解决异构数据库问题较理想的方案，这种方法需要一种交互媒介。
Middleware technique is the better perfect precept of solving heterogeneous database which needs a sort of mutual medium.
XML具有平台性无关、可扩展性和互操作性，具有数据语义描述和传送能力，是理想的数据源交互媒介。
With the features of platform independency, easy extendibility, good interactivity and data semantic description and transform ability, XML is fit for mutual medium of data source.
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