For instance a user can trace an XML document to see all the nodes and attributes, or trace a custom class to see its structure and properties.

比如，用户可以跟踪一个XML文档，看到所有的节点和数值，或者跟踪某个定制的类，以看到它的结构和属性。

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This class provides a very simple trace or logging mechanism that writes trace messages to a file in the current directory.

这个类提供一个非常简单的跟踪或日志机制，将跟踪消息写入当前目录中的一个文件中。

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Listing 7 creates these objects and arrays when trace is enabled for the current class.

当对当前类启用跟踪时，清单7就创建了这些对象和数组。

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And I sent home a questionnaire, asking their parents because most of the children in the class come from other countries. In fact, just about everybody in America comes from another country if you trace far enough.

我还给家长们发了一张问卷，因为班上,大部分学生来自,其它国家，事实上，如果追根溯源，任何一个美国都来自,其它国家。

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Impressive-sounding recitations of the requirements for establishing a class action, but not a trace of the inquiry a judge is supposed to perform into the fairness of the settlement and the basis for the fee.

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There's not much to it, but at least there's a trace of punk rebellion in the orgy of destruction visited on a comfortably middle-class suburban home -- even if the coda dubiously suggests that this could be the shortcut to social status and parental respect.

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