The difference between double quotation marks and book title marks lies in their different uses and reference objects.
Double quotation marks are mainly used to quote direct language or other people's words, indicating that the quoted content is part of the original text. Double quotation marks can also be used to quote titles of articles, short stories, poems, etc. On the other hand, book title numbers are mainly used to cite the titles of books, newspapers, magazines, movies, music albums, etc. The rules for using double quotation marks and book title marks may differ in different languages ??and countries, so please refer to the corresponding language specification or style guide for specific usage.