- 1. Well, it often happens that people with good eyesight fail to see what is right in front of them. They have too much to observe, I suppose.
- 唉，视力好的人常常看不到眼前的东西，我想是他们要看的东西太多了吧。
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- 2. Because the changes are painless and gradual, people often only realize they have a problem when their eyesight finally begins to fail.
- 由于这些病变不产生痛感且逐渐形成，人们通常只是在视力最后开始丧失时才意识到有问题。
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- 3. His eyesight was beginning to fail.
- 他的视力开始减退。
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- 4. His eyesight was beginning to fail.
- 他的视力开始减退。
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