在域对象中，您可以把相同的推理应用到业务方法。
You can apply the same reasoning to business methods within domain objects.
在这种方法中，业务应用程序的逻辑和功能以服务的形式体现。
In this approach, the logic and functionality of business applications is presented as a service.
但 SDO 与数据传输对象依然存在共性：仅传送数据，没有为之定义的应用方法或业务逻辑。
They still have this in common with Data Transfer Objects, though: They are only carriers of data and do not have application methods or business logic defined for them.
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