n. abbreviation
misc. shorthand notation
和 .（当前工作目录的简写符号），您可以引用文件系统中相对于当前工作目录的文件和目录。
With .. and ., the sigil for the current working directory, you can refer to files and directories in the file system relative to your current working directory.
当我们想到符号时，这些事情涌上心头，它们作为某一整套思想的替身或简写的符号。
When we think about symbols, these are the sort of things that come to mind - signs that act as a stand-in or shorthand for a whole set of ideas.
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