您可以像父类的属性一样访问父实体的属性。
You can access parent entity's attributes the same as you would the properties of a parent class.
one-to-many和many-to-one的双向关联也是类似的，当你从多端（子实体）定位到一端（父实体）。
You can make similar arguments for bidirectional one-to-many and many-to-one when you navigate from the one side (the children entities) to the many side (the parent entity).
惰性的关联可能在最初装载它的父对象之后很长时间才被访问(并获取相关联的实体)。
A lazy association can be traversed (and the associated entity retrieved) long after its parent object was initially loaded.
分层次的业务对象(Hierarchical Business Objects)——表示多个应用程序实体，比如父-子关系。
Hierarchical Business Objects - Represents multiple application entities, such as a parent-child relationship.
注意，processTradeUpdates()方法仅更新在父方法（或以上）中修改中创建的实体。
Notice that the processTradeUpdates() method updates only the entities that are modified or created in the parent method (or above).
它是其他多数实体接口的父接口，如content、category、site等，一般仅使用其子接口。
It is the parent interface of most other entity interfaces, such as content, category, site, and so on. Usually, we only use its subinterfaces.
在运行时，我第一次创建父类的实例的实体。
During runtime, I am first creating entities which are instances of the parent class.
精确指定：父视图指定子实体准确的大小。
EXACTLY: This is used by the parent to impose an exact size on the child.
接触实体哪里是父数据存储当你设定一个“接触”作为父母的客户？
Contact entity - where are the parent data stored when you set a 'contact' as parent customer?
若对象层是由实体数据模型工具生成的，则复杂对象将在访问复杂类型属性而不是实例化父对象时进行实例化。
When the object layer is generated by the Entity Data Model tools, complex objects are instantiated when the complex type property is accessed, and not when the parent object is instantiated.
因为复杂类型没有键，所以实体框架不能脱离父对象来管理复杂类型对象。
Because complex types do not have keys, complex type objects cannot be managed by the Entity Framework apart from the parent object.
将人体运动系统视为一由19个实体构成的刚性框架系统，每一实体上的父结点绕与上级实体连接的关节点旋转，该实体另一端的子结点则作为下一级实体的父结点。
The human moving system is defined as a rigid frame, which contains 19 articulate entities. Entity rotates around the father node and its son node is the father of another entity at the next level.
将人体运动系统视为一由19个实体构成的刚性框架系统，每一实体上的父结点绕与上级实体连接的关节点旋转，该实体另一端的子结点则作为下一级实体的父结点。
The human moving system is defined as a rigid frame, which contains 19 articulate entities. Entity rotates around the father node and its son node is the father of another entity at the next level.
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