简单地说，类是一个由变量和方法组成的离散块或束。

Put simply, a class is a discrete block or bundle of variables and methods.

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将单个的访问类与任务或离散操作联系起来。

Associates individual visitor classes with roles or discrete operations.

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这类类装入器结构允许在一个JVM中存在离散的类空间；所以，对于运行组件化的产品来说非常有用。

This kind of class loader structure allows discrete class Spaces to exist within one JVM; thus, it's very useful for running componentized products.

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