The best option is a "screen reader" - software that reads aloud the text on the screen through a computer's audio speakers.

目前的最佳选择是屏幕阅读器，即一种通过电脑扬声器将屏幕上的文字读出声来的软件。

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Recently she purchased a pocket-size reading machine that takes photographs of text and then reads the words aloud, and she said she thought of vision like that, as “just another piece of technology.”

近来她购买一个口袋大小的阅读器，它以图片的形式储存文本并能大声诵读文章，她说这样一来，视力不过是“另一种科技”。

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They also argue that companies face a considerable burden in ensuring their websites are compatible with the latest technologies for aiding the disabled, such as software that reads aloud text on the screen.

WSJ: Deaf, Blind Sue Over Web Shopping

End-to-End Hands-Free Text Messaging: Dragon already lets you dictate text messages to contacts completely hands free, and with these latest updates, it now reads incoming text messages aloud with the ability to respond, no hands required.

ENGADGET: Dragon Mobile Assistant 3.0 can share locations, call meeting numbers for you