First let me back up a bit and talk about vision correction before the printing press.

让我先回顾下在印刷术之前的视力矫正是什么样的。

youdao

BRAC's first social enterprise was a printing press that supplied books and other printed materials to the organization's schools and education programs.

BRAC的第一个社会企业项目是印刷出版，为机构的学校和培训项目提供书籍和其他材料。

youdao

In the same century, the invention of movable type and the printing press by Johannes Gutenberg around 1440 contributed to the birth of the first copyright system in the world.

同一世纪，约翰·谷登堡于1440年前后发明了活字和印刷机，促成了世界上第一个版权制度的诞生。

youdao

At age 24--among the first to use plastic strapping, instead of wire, to wrap newspaper bundles after they leave the printing press--he bought out his father's partner and relaunched the company as Power Industries.

FORBES: Catch and Release

North America's first printing press began operation in Cambridge, Massachusetts, in 1639, nineteen years after the Mayflower landing.

NPR: Excerpt: 'Minders of Make-Believe'