Message in Chinese (Simplified) (中文(简体))
无法从 EntityCollection 或 EntityReference 中删除此对象。无法从未与源对象关联的 EntityCollection 或 EntityReference 中删除附加到 ObjectContext 的对象。
Unlocalized message
The object could not be removed from the EntityCollection or EntityReference. An object that is attached to an ObjectContext cannot be removed from an EntityCollection or EntityReference that is not associated with a source object.
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