If you think about it, poor vision wasn't their only problem.
仔细想想，视力差并不是他们唯一的问题。
What did people with poor vision do, especially those few people who were actually literate?
视力不好的人会怎么做，尤其是那些少数受过教育的人？
How do you cope with the problem of poor vision?
怎样解决视力不好这一难题呢？
It seems I suffered from poor vision.
原因似乎是我有近视。
The creature is physically feeble, with poor vision and dull senses.
这种动物体质虚弱，视力差，感觉迟钝。
成绩差还是视力弱？
成绩差还是视力弱？
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