用户必须理解元类编程和传统面向对象编程的不同点和相同点(单继承和多继承)。

Users must understand the differences and interactions between metaclass programming and traditional object-oriented programming (under both single and multiple inheritance).

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查看Wikipedia以了解多范型编程语言、面向对象编程以及动态编程语言。

Check out Wikipedia to learn about Multi-paradigm programming languages, object-oriented programming, and dynamic programming languages.

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在传统的面向对象编程中，工厂是一个可通过一(或多)个方法构造符合要求对象的对象。

In traditional object Oriented Programming a Factory is an object implementing an interface of one or more methods that construct objects conforming to known interfaces.

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