例句與造句

1. Whilst macular laser has been proven to reduce the risk of moderate to severe visual loss , few patients have visual gain after laser in the long term . moreover , laser treatment is a destructive procedure , which may cause many side effects such as macular scar formation
   雖然研究證實，激光治療黃斑水腫可以減少視力進一步嚴重下降，但只有少數(shù)患者，最終可以透過激光治療改善視力。再者，激光治療具破壞性，可引起不少副作用，例如形成黃斑瘢痕等。
2. It's difficult to find visual loss in a sentence. 用visual loss造句挺難的
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