Message in Chinese (Traditional) (中文（繁體）)
類型 X 定義 MessageContract，但也衍生自未定義 MessageContract 的類型 <var>Type Name</var>。X 繼承階層中的所有物件，皆必須定義 MessageContract。
Unlocalized message
The type X defines a MessageContract but also derives from a type <var>Type Name</var> that does not define a MessageContract. All of the objects in the inheritance hierarchy of X must defines a MessageContract.
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