Now a system has been developed to make it easier for blind people to navigate the Internet, use word-processing software and even trace the shapes of graphs and charts.

目前，已研制出的一种系统，可以让盲人更加容易地浏览网络，使用文字处理系统，甚至可以感知图表的形状。

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And in East and West alike, scholars can trace how the role of the written word shifted over time.

不管是东方还是西方，学者都能追询到书本用途的变迁。

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The second big advantage is that he what word is the same, have no trace.

第二个大优点是他擦什么字都是一样，一点儿痕迹都没有。

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"Eventually you reach a high performance level as each time you trace a word, the pattern will start to be remembered, " said Dr Zhai.

BBC: The software is based on pattern recognition

Instead of tapping out letters or writing a word on screen, you trace each letter in a single, fluid stroke.

BBC: The software is based on pattern recognition

An etymologist can trace the origin and development of a word, but who can identify the moment when absolutely took off?

CNN: The words you love to hate