本文给出了这两个功能模块的类库设计。

The constructions of the class libraries of the two modules are designed in the paper.

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工作流是允许类库设计者创建具有巨大灵活性的函数库的一个强大技术。

Workflows are a powerful technique that allows library designers to create libraries that have a huge amount of flexibility.

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虽然他们总是被用在各个类库中，但从未如此正式地将其看作为一种设计模式。

While they have always used it in their libraries, it was never formally considered to be a design pattern.

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