Inheritance (and, by extension, polymorphism) in db4o really is that simple.
db4o中的继承(以及多态)其实就是这么简单。
HLA polymorphism decide to the individual difference of the immune response and the disease susceptibility.
HLA的多态性决定了免疫应答和疾病易感性的个体差异。
When do you use polymorphism and when do you use delegates?
什么时候用多态，什么时候用委派？
Test the polymorphism again with classes Shape, Rectangle, and Circle.
测试与类形，矩形，圈多态性一次。
The use of polymorphism can design and implement a scalable system.
利用多态性可以设计和实现一个易于扩展的系统。
The use of polymorphism can design and implement a scalable system.
利用多态性可以设计和实现一个易于扩展的系统。
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