对象的类别必须是有结构的；您不能范例化一个抽象类别。
The class of the object must be structural; you cannot instantiate an abstract class.
要使每一个类别对于初始化和列印自己负责。
Let's make each class responsible for initializing and printing itself.
对象的类别必须是有结构的；您不能范例化一个抽象类别。
The class of the object must be structural ; you cannot instantiate an abstract class .
抽象类别不能执行个体化。
使用序列化资讯，初始化此类别的新执行个体。
Initializes a new instance of the class with serialization information.
组件是视觉化样式项目类别的个别成员。
A part is a discrete member of a class of visual style elements.
使用描述例外状况的讯息，初始化此类别的新执行个体。
Initializes a new instance of the class with a message that describes the exception.
使用描述例外状况的讯息，初始化此类别的新执行个体。
Initializes a new instance of the class with a message that describes the exception.
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