Create a data structure to contain a group of objects.
创建包含了一组对象的数据结构。
The format also allows for you to apply effects to any object or group of objects.
这种格式还允许对任何对象或对象组应用特效。
Another design pattern that lends itself well to DEBA is the Visitor pattern, which externalizes an operation that will be performed on another object, a group of objects, or a structure of objects.
另外一种可用于DEBA架构的设计模式是Visitor(访问者)模式，将操作外部化，可以对其他对象、对象组或者对象结构执行这些操作。
A collection represents a group of objects, known as its elements.
集合表示一组对象，称为元素。
A collection represents a group of objects, known as its elements.
集合表示一组对象，称为元素。
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