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。
The en dash is also used to indicate ranges of Numbers (such as "7-10 days"), although it isn't flanked by Spaces in this case.
同样，短破折(en)用于指示一个数字范围(如“7 - 10天”)，当这样使用时不需要左右加空格。
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”)。
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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