印刷术

例句：

1. 1. The ancient printing press was invented by Johannes Gutenberg in the 15th century.
   约翰内斯·古腾堡在15世纪发明了古老的印刷机。
2. 2. The new printing technology has greatly improved the efficiency of book production.
   新的印刷技术大大提高了书籍生产的效率。
3. 3. The printing process involves many steps from preparing the paper to applying ink onto it.
   印刷过程包括许多步骤，从准备纸张到将墨水涂在纸上。