... 6岁 水育早教课 Early education course of water education 2岁 亲子综合课 parent - child class 2岁 音乐感统课 Music Sensory Integration ...
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A child (or derived) class can have one and only one parent (or base) class.
一个子(或继承的)类只可以有一个父类(基类)。
Can I pull more methods from the child into the generic parent class?
是否还能把更多的方法从子类提升到通用的父类中？
The worst thing a parent can do for a child, the experts agreed, is send a bodyguard to class.
父母为孩子做的最坏的事就是为孩子聘请保镖到班上。
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