覆盖答应程序员用新代码替换一个方法的实现。覆盖是具有便利的特点，大多书面向对象程序员乐意使用它。
Overriding allows programmers to replace a method's implementation with new code. Overriding is a handy feature, and most OO programmers make heavy use of it.
覆盖答应程序员用新代码替换一个方法的实现。覆盖是具有便利的特点，大多书面向对象程序员乐意使用它。
Overriding allows programmers to replace a method's implementation with new code. Overriding is a handy feature, and most OO programmers make heavy use of it.
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