The relationship between the method above and the sequence diagram becomes even clearer in Figure 4, where we see a more explicit diagram such as you might use in the design phase.

上述方法和序列图之间的关系在图4中显现得更为清楚，我们在图4中看到了在设计阶段可能用到的更明确的图。

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Imperative programs are formed by a sequence of statements with an explicit order, and their algorithms and programming constructs rely heavily on application state.

命令式编程由一系列带有明确顺序的语句构成，它们的算法和编程构造严重依赖于应用程序的状态。

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