java中父类可不可以转为子类?如：Child c=（Child）parent； 其中parent是Child的父类,但

java中父类可不可以转为子类?如：Child c=（Child）parent； 其中parent是Child的父类,但 Parent par = new Child(); par.ParentFun(); par为什么没有Child这个类的 Although the parent-child rela BETWEEN PARENT AND CHILD怎么样 Although the parent-child relationship has been w 1.Their donation is greatly a______by the child's parent. 英语翻译And parent-child activities,from shopping to sports,invo Train the parent and spare the child.怎么翻译? 如何翻译 I was the parent of a disabled child child 英语翻译child-free parent-hood grand-child这三个词是什么意思? 请写出下列词的复数形式parent photo bus life half child woman tooth