em rule
noun [ C ] publishing UK specialized uk/ˈem ˌruːl/ us/ˈem ˌruːl/ (also em dash, /ˈem ˌdæʃ/ /ˈem ˌdæʃ/)
长破折号
a long dash (= the symbol - ), used especially when typing on a computer or in printing to separate parts of a sentence
When should I use an em rule? 什么时候应该使用长破折号？
An em rule is a long horizontal bar, much longer than a hyphen. 长破折号是一条长的水平线，比连字符长很多。
Compare: en rule
- More examples
- The em rule is roughly the width of a capital M and is commonly known as a dash.
- The en rule is longer than a hyphen and half the length of an em rule.
- Some publishers use unspaced em rules for parenthetical dashes.