单引号

A character literal represents an integer constant , typically a Unicode code point, as one or more characters enclosed in single quotes.

一个字符表示一个整型常量，通常是一个 Unicode 代码点，用一个或多个包围在单引号中的字符来表示。

To enter the = symbol for a purpose other than creating a formula as described in this chapter, type an apostrophe or single quotation mark before the data; for example,'= means different things to different people.

如果输入的=符号要用于本章讨论的创建公式之外的其他的目，在数据之前键入一个撇号或单引号。例如，'=意味着对不同的人不同的事情。

Double style quotes are the most common, but single style quotes are also allowed.

双引号是标准的格式，单引号也是可以使用的。

In some rare situations, like when the attribute value itself contains quotes, it is necessary to use single quotes

在一些特殊场合，像当属性值中的内容就已经有双引号，这时候就必须使用单引号，如

In JavaScript, a string is started and stopped with either single or double quotes.

在JS中，一字符串可以用单引号或是双引号来开始和结束。

Note: If the attribute value itself contains double quotes it is necessary to use single quotes, like in this example

注意： 如果属性值本身含有双引号，那就必须用上单引号，比如在下面的例子里

Note: If the attribute value itself contains single quotes it is necessary to use double quotes, like in this example

注意： 如果属性值本身含有单引号，那就必须用上双引号，比如在下面的例子里

They can be enclosed in single quotes or double quotes

既可以用单引号也可以用双引号

Parsed strings are defined using double quotes and are parsed by PHP, whereas unparsed strings are represented by single quotes and are taken as is.

解析的文本串被使用双引号定义并且由PHP解析，相反，非解析string由单引号声明并且是原样获取。

These are double and triple apostrophes, not double quotes.

这些是双/三个单引号，不是双引号哦

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。