How to use hyphens in English - English Lessons Brighton
A hyphen is this short punctuation mark: – . Not to be confused with longer dashes, which have different uses. Hyphens are used in English for two specific purposes – hard hyphens join words together, while soft hyphens divide words. The uses of hyphens can depend on certain styles, but generally they are used in the patterns laid out below.
On August 12, 1981, IBM joined the computer race by introducing the IBM 5150 PC (personal computer).
加入竞赛的意思是已经有别的至少两个选手
牛津高阶：the mark (- ) used to join two words together to make a new one, as in back-up, or to show that a word has been divided between the end of one line and the beginning of the next
美国传统：A punctuation mark ( - ) used between the parts of a compound word or name or between the syllables of a word, especially when divided at the end of a line of text.
有没有资料可供考察？
wiktionary： 1. The symbol “‐”, typically used to join two or more words to form a compound term, or to indicate that a word has been split at the end of a line.
常识。加入竞赛，指的是竞赛已经在进行，竞赛必须有两个或以上选手才算是竞赛。
我是说1981年除了IBM 5150，有没有其他公司的PC的资料。
这个说法，应该是错误的。 字幕分软字幕和硬字幕，软字幕可以选择打开和关闭，硬字幕是一直显示的。 soft hyphen是软件根据情况决定是否显示那个符号，hard hyphen是一直显示那个符号 —— 这个定义合理。这个网站的定义，不合理。
这是机翻吗，这里没有提字幕呀？
逻辑。类似的逻辑。因为soft的含义，软的和可改变的意思接近。
这个页面是1981年计算机方面的重大事件，能往前一直翻到1933年：https://www.computerhistory.org/timeline/1981/
两者相似之处显而易见
