Paper, one of the four greatest inventions in ancient China, was invented by Cai Lun about 2, 000 years ago.

纸是中国古代四大发明之一，大约在2000年前由蔡伦发明。

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Paper is one of our oldest, simplest and most important inventions.

纸是我们最古老、最简单和最重要的发明之一。

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The movable type printing, the compass (指南针) , gun powder and the paper making are called four great inventions of China.

活字印刷术、指南针、火药和造纸术被称为中国四大发明。

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The printing press, pizza cutter, writing, paper, all can be thought of as being inventions worthy.

FORBES: The Greatest Invention of All Time: Two Candidates

The sense of the century unfurling is heightened by chronological order in which the inventions are presented, from the first (the paper clip, devised in 1900 by a Norwegian, Johann Vaaler, living in Germany) to the last (Prozac, which was introduced commercially in Belgium in 1986).

ECONOMIST: Encapsulating a century in gadgets