Example 1: Driver information in trace file.

示例1：追踪文件中的驱动程序信息。

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Example 2: Successful controller connection in trace file.

示例2：追踪文件中成功的控制器连接。

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Example 3: Unsuccessful controller connection in trace file.

示例3：追踪文件中未成功的控制器连接。

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Arthur Conan Doyle,creator of the fictional detective Sherlock Holmes, wrote about Poe's influence on other crime writers: "Each may find some little development of his own, but his main art must trace back to those admirable stories of Monsieur Dupin,so wonderful in their masterful force, their reticence,their quick dramatic point."

VOA: special.2009.02.02

I don't know how many know that there are trace, trace amounts, of cyanide in almonds.

我不知道有多少人知道在杏仁中有非常，非常微量的氰化物。

麻省理工公开课 - 化学原理课程节选

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。

麻省理工公开课 - 媒体、教育、市场课程节选

However, carbon-14 is only found in trace amounts, which can make it difficult to detect.

FORBES: Scientists Use Ion Beams To Detect Forged Art

The pesticides, known as organophosphates, are commonly sprayed on food crops and can be found in trace amounts on berries, green beans, and other fruits and vegetables sold in stores.

CNN: Pesticide exposure in womb may hurt your child's IQ

As Anders mentioned, so many people here in Chicago trace their roots back to NATO countries.

WHITEHOUSE: Opening Session of the North Atlantic Council