single quote造句怎么写

The extra single quotes are escape characters.

In order to enter a single quote into a text literal surrounded by single quotes, or a double quote into a literal surrounded by double quotes, prefix it with a backslash character.

This is because it was given the option of picking a double or single quote at the end.

The field name is not valid. Field names must not contain any of the following characters: open bracket ([), close bracket (]), quotation mark ("), single quote ('), back slash (), forward slash (/).

To create an actual apostrophe, put two single quote marks side-by-side (") to produce one quote mark in your output."

The specified protocol name is not valid. Protocol names cannot contain the following characters: open bracket ([), close bracket (]), quotation mark ("), single quote ('), back slash (), forward slash (/).

Listing 11 shows an example of the escape sequences for a string that USES a single quote as an apostrophe.

The application name is not valid. Application names cannot contain the following characters: open bracket ([), close bracket (]), quotation mark ("), single quote ('), back slash (), forward slash (/).