The first three are links to directories, and the fourth is a plain file.

头三项链接到目录，而第四项是普通文件。

youdao

In some cases, you can also map a file descriptor to a plain file or another device into memory.

在某些情况下，还可以把一般文件或另一个设备的文件描述符映射到内存。

youdao

In such a case, it is even possible (and probably often useful) to index each XML file both as a collection of nodes and as a plain file.

在这种情况下，甚至有可能(可能往往很有用)将每个XML文件同时作为节点集合和文本文件来索引。

youdao

After making a copy of the file, the hacker ran it through a code-breaking program that exposed the passwords as plain text.

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