事实上，戴眼镜根本不能证明一个人很聪明，因为你能找出一大堆造成视力不佳的理由，而且人们也可以选择戴隐形眼镜。
In fact, glasses are a poor indication of intelligence because you can have bad eyesight for a number of reasons and then choose to wear contact lenses.
根据最近的一项调查显示，许多学生视力不佳。
According to a recent survey, many students have poor eyesight (视力) .
有些用户的视力不佳，有些人可能不能用键盘或鼠标，而有些人可能只能移动他们的眼睛。
Some users may have poor vision, some might not be able to use a keyboard or mouse, and some might only be able to move their eyes.
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