The reason that the derived class may not add to the specfication list is users of the hierarchy should be able to write code that depends on the specification list.是什么意思_The reason that the derived class may not add to the specfication list is users of the hierarchy should be able to write code that depends on the specification list.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句