名词
中文翻译：视力差
同义词：
['blindness', "poor eyesight例句：1. He had a poor vision and couldn't see clearly.（他视力不好，看不清楚。）2. She was diagnosed with poor vision and needed glasses.（她被诊断出视力不好，需要戴眼镜。）"]
例句：
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1. He had a poor vision and couldn't see clearly.
他视力不好，看不清楚。
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2. She was diagnosed with poor vision and needed glasses.
她被诊断出视力不好，需要戴眼镜。
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3.The old man had poor vision and could barely see the road.
那位老人视力不好，几乎看不见路。