As an application executes, it makes system calls to the underlying operating system whenever it needs to open a file, send a packet, or otherwise use system resources.

在应用程序的执行过程中，当需要打开文件、发送数据包或者使用系统资源时，它会对基础操作系统进行相应的系统调用。

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Finally, Listing 5 provides the content of the NFS packet, including the permissions (file mode), file size, ownership and other information.

最后，清单5提供了NFS数据包内容，包括权限(文件模式)、文件大小、拥有者和其他信息。

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Because the entire data stream for the file arrives in a single packet.

因为这个文件的数据流是在一个单独的包内到达。

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Every file or program that you see here in this packet is alphabetically listed.

你们看到的所有的文件或程序,都会在这里按字母表顺序一一列出。

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This packet of data (usually about four kilobytes of code) is then embedded within the file, and a digital watermark is inserted into the newly created space left behind by the compression process.

ECONOMIST: MONITOR