为了提供对象持久化，我们扩展了对象模型，允许为对象定义持久化属性。
To provide object persistence, we extended the object model to permit the definition of persistence attributes for objects.
为了提供对象持久化，我们扩展了对象模型，允许为对象定义持久化属性。
To provide object persistence, we extended the object model to permit the definition of persistence attributes for objects.
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