Braille books are expensive and cumbersome, requiring reams of thick, oversize paper.

布莱叶版的图书通常昂贵又难以携带，纸张巨大且厚重。

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After experimenting with many different ways of making dots and dashes on paper, Braille finally arrived at a simple system.

布莱叶在纸上试验各种不同的制造圆孔和凹痕的方式方法。最后，他选定一个简单系统。

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Blind children usually are taught to read Braille, a system of raised dots embossed on paper and read by touch.

盲童通常学习阅读盲文，盲文是由在纸上浮突出来的小圆点构成的(文字)系统，用手触摸着读。

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Blind children usually are taught to read Braille, a system of raised dots embossed on paper and read by touch.

盲童通常学习阅读盲文，盲文是由在纸上浮突出来的小圆点构成的(文字)系统，用手触摸着读。

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