Of or pertaining to the branch of physics that studies the properties and behavior of light. This includes how light interacts with matter and the instruments used to detect it.
行业： 物理
近视状态。戴着眼镜，近视是可以纠正的。运动也可以得到纠正。
仪器，允许不是在直接的视线，有待观察的对象。
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