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1·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”)。

2·Em-dash (-) : You're stuck up and pretentious.

破折号：你爱炫耀、自命不凡。