Overrides is the more normal qualifier. If the child class redefines a base class function in this way, then regardless of how a child object is referenced (using either a base class or a child class reference) it is the child function that is called.
On the other hand, if the child class function Shadows the base class function, then a child object accessed via a base class reference will use that base class function, despite being a child object.
The child function definition is only used if the child object is accessed using a matching child reference.
与恶龙缠斗过久,自身亦成为恶龙；凝视深渊过久,深渊将回以凝视…
