流行的 Presentation Model （请参阅 参考资料） 提倡将应用程序的状态与业务逻辑分开放入模型层中，而模型层是从视图的 GUI 控件中分离出来的。
The popular Presentation Model (see Resources) advocates separating out the state and business logic of an application into a model layer that is separate from the GUI controls in the view.
这种封闭的模型使Velocity能够提供分离的模板表示层，与任何应用程序业务逻辑或者数据管理代码清晰地划分开。
This closed model allows Velocity to provide a decoupled templating presentation layer, cleanly separated from any application business logic or data management code.
最后的阶段则是当北美洲和欧亚大陆分离时，成为了我们现今我们所知的世界和这些分开的大陆。
The final major phase occurred when North America broke away from Eurasia, creating the world and the separate continents we know today.
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