随手记：不同的输入横线连接符号：连字符、短划线、长划线、减号对应代码在：https://blog.csdn.net/xiaoxiao_ziteng/article/details/134500093详细案例解析在：https://jakubmarian.com/hyphen-minus-en-dash-and-em-dash-difference-and-usage-in-english/
