The code generated for the pure virtual function is shown in Listing 1.
为纯虚函数所生成的代码如列表 1 中所示。
A class containing (or inheriting) one or more pure virtual functions is an abstract base class.
类包含或者继承一个或多个纯虚函数，这样的类就是抽象基类。
It is very hard to imagine that if our world will become a place like "matrix" where we all live in a pure virtual world.
真的很难想象，我们的世界会不会变成《黑客帝国》那样极端的纯虚拟生存。
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