类的继承体系可以用"堆积木"来解释?嗟募坛刑逑悼梢杂?堆积木"来解释类的继承体系可以用"堆积木"来解释-kind of inheritance system can be used "Stacking wood" to explain the types o f inheritance system can be used "Stacking wood" to explain the types of inheritance system can be u