en dash

基本解释

When you use – in your document, it's replaced by Unicode character U+2013, the en dash (-) character.
我们在文档中使用 – 时，它由 Unicode 字符 U+2013（短横线 - 字符）替代。
Because the replacement text for – is a character reference, it's exactly the same as typing an en dash character.
由于 – 的替代文本是一个字符引用，因此它等同于输入一个短横线字符。
Most fonts are equipped with at least two dashes: an en dash (–, –, which is the width of a lowercase “n”) and an em dash (—, —, which is the width of a lowercase “m”).
大多数字体都拥有二种不同的横线破折号：en横线(–, –,相当于小写的“n”的宽度) 以及一个em横线（—, —,宽度相当于小写的“m”）。

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a short dash (= the symbol - ), used especially when typing on a computer or in printing to separate numbers