the single quotation mark in front of the null list is used to tell scheme that you are using () as data and not as a part of your parse tree.
空列表前面的单引号用来告诉scheme您正在使用 ()作为数据,而不是用它作为解析树的一部分。
that function uses a regular expression to change a single quotation mark into backslashed single quotation mark.
该函数使用一个正则表达式将一个单引号标记更改为带有反斜杠的单引号标记。
to be accessed properly, the jdbc url must be passed into the connect command as a string; hence it「s enclosed in single quotation mark (」) characters.
要正确访问,必须将jdbcurl作为字符串传递给connect命令;因此需要将其封装在单引号 (「)字符里。
the single quotation mark (」), however, does not provide this functionality.
但是,单引号 (')不提供此功能。