Before I can get to the mapping part of the solution, you need to understand how a simple three-letter string like DEN gets converted to a point on a map.

在讨论该解决方案的地图绘制部分之前，您需要了解如何将一个简单的三个字母的字符串(如den)转换为地图上的一点。

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Be aware that simple string concatenation can be a dangerous way to construct XML documents in general (see Resources for an article that expands on this point).

注意，使用简单的字符串连接构造XML文档一般来说比较危险(参考资料中的一篇文章解释了这一点)。

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A server mode connection is created by passing a string that identifies an end point (protocol dependent identifier, for example, a port number) on the local host to the Connector.open method.

通过将标识本地主机上端点(取决于协议的标识符，例如，端口号)的字符串传递给Connector . open方法来创建服务器方式连接。

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With the Go Secure service for Check Point products, rather than going through a complex string of downloading files and importing them into Check Point VPN software, end users log on to a Web site and click twice.

CNN: VeriSign takes the pain out of digital certificates