“额外” 的那个单引号是换码符。
下一节讨论为什么要使用两个单引号。
The use of the two single quotes is discussed in the next section.
soliddb字符串使用单引号分隔。
在选择单引号和双引号时要小心。
Be careful about your choice of single versus double quotation marks, as well.
值用单引号或双引号括起来。
必须使用单引号确定每个别名的界限。
如果没有替代参数，则只输入一个单引号。
If there are no substitution parameters, enter only one quote.
原子值必须以小写字母开头，否则需要加上单引号。
Atoms must start with a lower case character, or you can delimit with single quotes.
请参阅下面的 “一个或两个单引号？”
清单2.单引号vs。
消息内的单引号必须由另一个单引号来转义。
A single quote in the message must be escaped with another single quote.
而单引号引用的字符串则是简单直接的文字。
一个或两个单引号？
这有些棘手，因为我在脚本中不能使用单引号。
It was tricky, because I could not use a single quote inside the script.
如果最外边的引号是单引号，那么不展开变量。
If the single quotation mark is the outermost quote, no variables are expanded.
记住用单引号括住'yes'和 'no'。
Remember to enclose 'yes' and 'no' in single quotation marks.
注意，内有单引号，可选择映像内可用的任意时间戳。
Note the single quote is inside and you can pick any timestamp available in the images.
在处理字符串数据时，可以使用双引号或单引号分隔。
When working with string data, you can use either double quotation marks or single quotation marks to delimit them.
Ruby不处理任何用单引号括起来的字符串信息。
Ruby does not process any data in a string if you wrap it in single quotes.
细心的读者会发现，如果传递的参数包含单引号，将会完全失败。
The careful reader will realize that this may fail badly if the passed argument includes single quotes.
如果有任何替代参数(象{0})，则输入两个单引号。
If there are any substitution parameters (like {0}), enter two quotes.
要忽略某个信号，使用两个单引号代替 command_list
To ignore a signal, use two single quotes in place of the command_list
如果存储库不需要单引号，那么连接器应该去掉这些单引号。
You will need to strip these single quotes accordingly in your connector if your repository does not require them.
这解释了不匹配的单引号或双引号会导致出现新提示符的原因。
This explains why an unmatched single or double quotation mark causes a new prompt to appear.
如果参数是基于字符的输入参数，那么在单引号中指定字面值。
If the parameter is a character-based input parameter, then you would specify the literal value surrounded in single quotes.
另外一点值得注意的是字符串是通过单引号或双引号被编码的。
It's worth noting that strings are encoded using single or double quotation marks.
首先，单引号必须放在括号之前，然后在括号内定义列表元素。
First, the single quote must precede the parentheses, then the list elements are defined within the parentheses. The output is shown below.
单引号更好，因为使用单引号后您可以在一行程序内使用双引号。
Single quotes are better, because then you can use double quotes inside the one-liner.
如果字符串是以单引号开始，那么必须以单引号结束，反之亦然。
If you start a string with a single quotation mark, you must end with a single quotation mark, and vice versa.
例如，用户可能需要将单引号(或省略号)作为人名的一部分输入。
For example, users may need to enter a single quote (or apostrophe) as part of a person's name.
应用推荐