In Part 1, we introduced the video rental case study that is used as the example throughout this tutorial series.

在第1部分中，我们引入了录像租用的案例研究，这个例子将贯穿本系列教程的始终。

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This is a pretty serious omission as the namespace used in the request is an essential part of that request.

这是一个极其严重的缺失，因为在请求中所用的名称空间是请求中的基本部件。

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As you may remember, you used a similar strategy for your tabs in Part 3 of this series.

正如您所注意到的，对选项卡使用了与本系列第3部分相同的策略。

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