Because the UI is unique to the iPhone you need to separate out the visual layer from the domain model, basic MVC logic.
由于UI在iPhone的唯一性，所以需要将可视层与领域模型剥离开来，这也是基本的MVC逻辑。
In the domain of J2EE Web applications, the model is the business logic of an application, and the JSP pages comprising the presentation layer are the view.
在J2EEWeb应用程序领域中，模式是应用程序的业务逻辑，视图是包含表示层的JSP页面。
The presentation layer can call the validation logic on the data provided by a form before passing it to the domain model.
展示层可以调用验证逻辑对表单提供的数据进行验证，然后再将该数据传递给域模型。
Because the only layer containing transaction logic is the API layer, I will only show the transaction logic in that layer's domain-model classes.
因为包含事务逻辑的惟一的一个层是api层，我将只展示该层的域模型类中的事务逻辑。
Because the only layer containing transaction logic is the API layer, I will only show the transaction logic in that layer's domain-model classes.
因为包含事务逻辑的惟一的一个层是api层，我将只展示该层的域模型类中的事务逻辑。
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