Sbappend adds the data at the end of send buffer and tcp_output sends the segment onto the interface.

sbappend在发送缓冲区的末尾添加数据，并且tcp _ out put将该段发送到接口。

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Therefore, a SONET interface can report B2 errors only for a particular monitored segment.

因此，SONET接口可以报告，只在一个特定监测段B2的错误。

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In this tutorial segment we'll look at a few ways you can customize controls, and then close out by polishing up the user interface of our Digg application using these techniques.

在这篇教程里，我们将看一下你可以定制控件的几种方式，然后在结尾使用这些技术对我们的Digg应用的用户界面润色一下。

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