Scanning: Scanning, or footprinting, is part of the initial information-gathering process for a hacker.

扫描： 扫描或 跟踪足迹（footprinting）是黑客的初始信息收集过程的一部分。

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The initial example referred to an agent scanning an RSS feed, so the code in Listing 4 follows up on that idea.

开始的示例引用一个扫描 RSS feed 的代理，因此 清单 4 中的代码延续了这个思路。

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Scanning electron microscope was used to observe the conformation and distribution of carbon nanotubes on the initial interface of coatings.

采用场发射扫描电镜分析了复合镀层的表面和初始界面上的碳纳米管存在形式和分布。

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Best Buy seems to be missing the benefit of its so-called showroom status: the retailer has the initial opportunity to make a direct connection with customers and close the sale before shoppers begin scanning SKUs.

FORBES: The Showroom Showdown: Best Buy vs. Amazon