单词'short-sighted'需要一个连字符。

The word 'short-sighted' requires a ___hyphen.

连字符用于连接像'mother-in-law'这样的复合词。

A ___hyphen is used to link compound words like 'mother-in-law'.

当一个单词在行末需要断开时，你必须插入一个连字符。

When breaking a word at the end of a line, you must insert a ___hyphen.