After you have done a few other things within the application, you may have profiling code to supplement Firebug (a Firefox extension).

在应用程序中进行了其他一些操作之后，您可以获得能够补充Firebug (Firefox扩展)的配置代码。

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Thus, in these situations, it is necessary to supplement XJConf with the DOM extension in PHP, which provides an API to dynamically construct an XML tree and write it to a file.

因此，在这些情形下，需要在php中为XJConf补充DOM扩展，这个扩展可以提供API动态构建xml树并将它写入文件。

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A activity classe is the extension and supplement of classroom teaching, and it is also the course of centring on activities.

活动课是课堂教学的延伸和补充，是以活动为中心展开教学的课程。

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