There are no hard and fast rules about the use of hyphens in English.
对于号
使用, 英语中没有
限制。
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So in that sense, historically, the German letter that's written kind of like the letter B (the Eszett) does historically come from a ligature of the long S and the letter Z even though it is pronounced as a double S today.
因此从这个意义上说,从历史上看,写法有点像字母 B(Eszett)的德语字母历史上确实来自长 S 和字母 Z 的连字,尽管今天
的发音是双 S。