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。
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。
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。
Some people saw sewing machines, washing machines and a printing press for the first time at fairs in the 1850s and 1860s.
十九世纪五、六十年代有些人第一次在农贸集市见到缝纫机，洗衣机和印刷机等。
Some people saw sewing machines, washing machines and a printing press for the first time at fairs in the 1850s and 1860s.
十九世纪五、六十年代有些人第一次在农贸集市见到缝纫机，洗衣机和印刷机等。
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