The result is that while about forty percent of Chinese primary school students need glasses, only three percent of Australian children do.

结果是，大约40%的中国小学生需要戴眼镜，而只有3%的澳大利亚孩子需要。

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Mike: Maybe you need glasses.

迈克：也许你要戴眼镜。

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I use the computer at home and at work for an average of 9 hours per day and do not need glasses.

我每天在家以及工作时平均要使用9小时电脑，却并不需要眼镜。

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In order to watch the limited amount of 3-D content currently available (some sports and movies on DirecTV) viewers need glasses.

FORBES: Get Ready to Buy Your Own 3-D Glasses

Over seven hundred million people who need glasses worldwide cannot afford them.

FORBES: Name You Need to Know in 2011: Warby Parker

People who work in jobs which require them to do a great deal of reading are likely to suffer from the condition, known as presbyopia, and will need glasses earlier.

BBC: Eyesight: The effect of age