Mass literacy was only possible after the invention of printing.
发明了印刷术后文化教育才得以普及。
literacy详细解释
lit.er.a.cy n.（名词）The condition or quality of being literate, especially the ability to read and write.See Usage Note at literate 读写能力：识字、尤指会读写的状态或性质参见 literate
