Optics is the branch of science concerned with vision, sight and light.
光学是有关视觉、视力和光的一门学科。
Greatly improved the poor vision of the movement of sight.
大大改善了视力差的运动视线。
If I loose my sight will my vision be halved?
如果我失掉一半视力视野也会减半么？
I'll have my sight tested tomorrow. My vision is a little blurry recently.
最近看东西有点模糊，我明天去检查视力。
I started concentrating so hard on my vision that I lost sight.
我失算我才开始努力专注在我的视野。
However, there can be many different symptoms of sight loss other than reduction of vision.
不过，可以有很多不同的症状视线以外的其他损失减少的视野。
That's the vision we won't lose sight of.
这是我们不会忘记的愿景。
The most pathetic person in the world is someone who has sight, but has no vision.
可怜的人，就是有一双眼睛可以看，却看不见愿景的人。
The most pathetic person in the world is someone who has sight, but has no vision.
可怜的人，就是有一双眼睛可以看，却看不见愿景的人。
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