床边常备纸与笔，拎包与口袋里也务必备有本子。

Give keeping a notepad and pen beside your bed, and always carry one in your handbag or pocket.

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自从19世纪80年代，其他大型的产业都兴致勃勃地接受电脑化进程，而世界大多数地区的医生仍旧是与笔和纸打交道。

Whereas every other big industry has computerised with gusto since the 1980s, doctors in most parts of the world still work mainly with pen and paper.

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不需要昂贵的设备，只需要纸和笔，你就可以在各种模型与数字之中摸索。

Baez said. "No expensive equipment, just pencil and paper, and you can start fiddling around with patterns and numbers."

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