That's why they invented the mail system and carbon paper and onion skin copies.

反正现在有邮政系统，还有复和拷贝。

Carbon paper allows two copies of a document to be made at once.

复可让一件迅速印出两复件。

Before email was popular and mechanical typewriters weren't just for hipsters, the quickest way to make copies of a document was to use a special sheet of paper called carbon paper.

在电子邮件普及之前，机械式打字机不只是时尚人士专利，复制件最快方法是使用一种叫做复特殊张。

Think wistfully of the days when journalism involved a typewriter, carbon paper and the telephone directory.

怀念旧日，那时新闻工作还用得上打字机、复和电话簿。

You would load the carbon paper into the typewriter along with two normal sheets of paper to produce two identical copies of the original.

把复和两张普通一起装进打字机，你就可以得到两完全相同复印件。

I remember using carbon paper back in the 1970s, when I was in high school.

我还记得上世纪70年代上高中时候用过复。

Adding machine and carbon paper got me this far.

只凭计算器与碳式复也让我混到这样啊。

If you typed it without putting the extra piece paper and the piece of carbon paper it wouldn't work.

如果你没有放额外张和碳复，它是不会起作用。