Before the invention of printing, maps like Ptolemy's were rare and expensive because they had to be hand drawn.

印刷术发明以前，类似托勒密所制的地图很少见，而且价格不菲，因为当时的地图必须以手工绘制。

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Before the invention of printing, books were very rare and expensive.

印刷术的发明之前，书非常罕见和昂贵的。

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Designer Campbell Rey expects 3d printing to be the new norm: allowing us to print marble, rosewood, and other materials considered rare.

设计师坎贝尔·雷伊期认为3d打印将会有新的形式：我们可以打印大理石、红木和其他稀有材料。

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Computer coding systems convert most Chinese pictorial characters for printing, but some are so rare that they are never assigned a code.

BBC: Chinese jettison rare surname unrecognised by computer

Although rare now, hand-crafted Bibles were common before the invention of the printing press.

WSJ: Unlikely NY scribe handwrites Good Book in 4 years

Printing presses started cranking out books, a few at first, and they were rare and expensive.

FORBES: Knowledge Is Power? Those Days are Long Gone