给定一篇中文文章，将其中的所有句子翻译成英文，并将翻译结果拼接成文章。输出翻译后的英文文章。
这篇文章介绍了中国古代四大发明之一——造纸术的历史。汉朝人蔡伦发明了造纸术后，这项技术很快传播到其他国家。如今，纸张已成为我们生活中的不可缺少的物品之一。此外，我们也可以通过绿色环保的方式回收利用废纸来保护环境。
This article introduces the history of one of the four great inventions of ancient China -- papermaking. After the Han Dynasty inventor Cai Lun invented papermaking, this technology quickly spread to other countries. Nowadays, paper has become one of the essential items in our life. In addition, we can also protect the environment by recycling waste paper through green recycling methods.