First, you can mix single and double quotation marks when creating a string, as long as the string USES the same type of quotation mark at the beginning and end.

第一，在创建字符串时，您可以混合使用单引号和双引号，只要字符串在开始位置和结束位置使用同一类型的引号。

youdao

The quotation mark that is produced when you type "on your computer is not a true quotation mark (unless your word processing or page layout program has automatic formatting)."

当你在键盘上键入“号时，你所输入的并非真正意义上的引号(除非你在字处理程序之中进行了自动格式化)。”

youdao

In 1928, and this is the next quotation on the handout, Milton has come to represent for Virginia Woolf a very different type of cultural force.

在1928年，这是讲义中的下一条引语，弥尔顿对佛吉尼亚·伍尔夫又成了，一种不同类型的文化力量的代表。

youdao

In 1928, and this is the next quotation on the handout, Milton has come to represent for Virginia Woolf a very different type of cultural force.

在1928年，这是讲义中的下一条引语，弥尔顿对佛吉尼亚·伍尔夫又成了,一种不同类型的文化力量的代表。

耶鲁公开课 - 弥尔顿课程节选