In one embodiment, the expiration engine writes expiration information to the optical media, such as a date stamp at initialization of a recordable optical medium.

在一个实施例中，所述期满引擎把期满信息写入光学介质，例如，可记录光学介质初始化时的日期标志。

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Some of them date to the 17th century, when the blacksmiths that created them were still the engine of civilized society.

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Ask clearly displays whether AskEraser is active, and Graham notes that the search engine has stopped tracking the time and date of cookies it places on user machines.

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