名词 “typo” 是 “typographical error（排印错误）” 的简写，指 “打字或排印文稿时出现的小错误”，其中最常见的就是单词的拼写错误。与名词 “typo” 搭配使用的动词是 “make”，组成 “make a typo” ，意思是 “打错一个字”。

例句

Could you check this email for typos before I send it?

你能在我发送这封电子邮件之前检查一下里面有没有打字错误吗？

The boss wasn't happy when I sent out a report with a typo in it.

在我发出了有一个拼写错误的报告后，老板很不高兴。

Look at this letter you've written – I think you've made a typo.

看看你写的这封信，我觉得你打错字了。