Going back to Listing 6, let's make a slight modification.

回到清单6，让我们对它进行稍许修改。

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This modifies the typical sequence from that shown in Figure 4 to the slight modification in Figure 5.

这会让图 4 内所示的这个典型顺序发生稍许变化，如 图 5 所示。

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For instance, with slight modification you can introduce the state pattern with some persistence to keep track of conversational state.

例如，只需稍作修改，就可以为state模式引入持久性，以跟踪会话状态。

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