1·You can then customize how each class can be administered by adding class attributes to this subclass.
然后可以通过为这个子类添加类属性来定制如何对每个类进行管理。
2·If a subclass of one of these classes needed to override the default behavior, it could do so by overriding the method.
如果这些类中的任何一个的子类需要覆盖默认行为，那么可以通过覆盖这个方法实现。
3·You will never instantiate this class directly, but always create an instance of its subclass.
永远不要直接实例化这个类，而是创建它的子类的一个实例。
4·Instead, I add extra methods to the subclasses that perform the appropriate action for each subclass.
相反，我向为每个子类执行适当的操作的子类添加额外的方法。
5·Create a mock object class as a subclass of the concrete class.
创建一个模拟对象类作为具体类中的一个子类。
1·Also, each subclass inherits methods from the superclass.
同时，每个亚纲继承来自总纲的方法。
2·Any of numerous minute Marine and freshwater crustaceans of the subclass Copepoda, having an elongated body and a forked tail.
桡足动物任一种桡足亚纲的大量海洋或淡水甲壳纲小动物，身体细长，尾部分叉。
3·Any of various aquatic crustaceans of the subclass Branchiopoda, such as the fairy shrimp and water flea, characterized by a segmented body and flattened, leaflike thoracic appendages.
鳃足动物一种鳃足亚纲水生甲壳类动物，如神仙虾和水蚤，特征是身体分节，具有平直叶状。
1·This name is used to intercept the action in the portlet subclass.
这个名称用来截取portlet子集中的动作。
2·In effect, a UML 2.0 stereotype is defined as if it were simply a subclass of an existing UML metaclass, with associated attributes (representing tags for tagged values), operations, and constraints.
事实上，一个UML2.0原型被定义成好像它仅仅只是一个现有uml元类的子集，并带有关联的属性(代表加有标签的值的标签)，操作和限制。
3·The fuzzy comprehensive evaluation method appraises environment by establishing and confirming gene subclass, estimation subclass, subject function and weighted subclass.
模糊综合评价法通过建立和确定因子集、评价集、隶属函数和权重集等模糊集合，进行环境评价。