Page 1
It is easy to treat paper as ordinary because we see it in books, boxes, notes, and drawings every day.
纸张太常见了，所以我们很容易忘记，它其实曾经深深改变过人类生活。正文预览
Page 2
Before paper became common, people wrote on materials that could be heavy, costly, or difficult to produce.
在纸广泛使用之前，人们写字记录时常常要用更重、更贵，或者更难制作的材料。
Page 3
Paper made writing lighter and easier to carry, copy, and store.
纸让记录变得更轻、更容易携带，也更方便抄写和保存。
Page 4
Because paper was lighter, easier to write on, and cheaper to carry than many older materials, more people could keep records, learn to read, and share ideas.
纸比很多更早的材料更轻、更容易书写，也更方便携带，所以才会有更多人能记事、识字，并把想法传给别人。
Page 5
Paper helped books, letters, government records, school materials, and art travel farther through society.
纸帮助书籍、信件、官方文书、学校教材和艺术作品在社会里传播得更远。
