To retrieve only documents that match the term, but not those that match the lemmas, enclose the term in double quotes.
要查询只与这个词汇相匹配而不与词元相匹配的文档，需要给这个词汇加上双引号。
Note that the brace expansion of the file path, not the full remote path expression, has been enclosed in double quotes.
请注意，文件路径中展开的大括号（不是完整的远程路径表达式）已用双引号括上。
What benefit does this provide? Mainly, that the content inside the double quotes is not parsed, which provides you with more flexibility.
其优点主要在于，双引号中的内容不会被解析，这样便有了更大的灵活性。
If the input contains blanks that are protected by single or double quotes, or by backslash escaping, then xargs will not break the input at such points.
如果输入包含由单引号或双引号保护的空格，或使用了斜杠进行转义，那么xargs将不在遇到这些空格时中断。
When DELIMIDENT is not YES, strings in double-quotes are treated as string literals. To set DELIMIDENT
当DELIMIDENT没有设置为YES 时，双引号中的字符串被当作字符串字面值。
When DELIMIDENT is not YES, strings in double-quotes are treated as string literals. To set DELIMIDENT
当DELIMIDENT没有设置为YES 时，双引号中的字符串被当作字符串字面值。
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