But the unspoken theme of the article is that no one arrives - the destination keeps shifting.

然而，这篇文章的潜在主题是没有顾客光临——顾客的目的地总在变化。

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For the purposes of this article, the term security covers the round-trip protection of XML between a client and a final destination through a variable number of intermediaries.

对于本文的目的而言，安全性一词涉及到，从一个客户机经过数量不定的中间机器到达最终目的地，在这一往复过程中对XML的保护。

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Throughout this article, I assume that you have already added a new hard disk device, or have a spare disk device or partition to use as the destination for the directory or file system.

在本文中，假设您已经添加了一个新的硬盘设备或具有备用的硬盘设备或分区，以用作目录或文件系统的移动目标。

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