A dynamically bound method call, however outward into the inheritance hierarchy.

动态绑定方法的调用, 然而,这将涉及到继承类图.

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The inheritance hierarchy is actually a directed acyclic graph.

注意:继承实际上是开放的层次关系.

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The inheritance hierarchy is a actually a directed acyclic graph.

注意:继承实际上是分级的不闭合的层次关系.

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In OO programs, refactoring frequently happens when redesigning the classes in an inheritance hierarchy.

在面向对象编程中, 重新设计继承层次中的类时经常发生重构.

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