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n.
- 1. 大瀑布2. <医>白内障
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- Some studies link long term exposure to ultraviolet rays(UV) to cataract formation.
有些研究认为白内障的形成与眼睛长期暴露在紫外线下有关。 - sounding brass and a tinkling cymbal; the sounding cataract haunted me like a passion- Wordsworth.
浑厚的铜管声和清脆的铙钹声；奔腾浑厚的瀑布声如激情般萦绕于怀-沃兹沃斯。 - using a piece of donated corneal tissue to repair the eye of someone who has had a cataract removed.
利用捐献的角膜组织治疗白内障患者。 - In the past three years 500,000 cataract operations have been performed with a success rate of 99.76 percent;
三年来，完成白内障复明手术50万例，有效率达99.76%。 - A second cataract operation was being planned to restore Romina's bilateral sight, the zoo said in a statement.
布里斯托尔动物园在一次声明说，罗米纳第二次白内障手术的方案已经定下来了，这次手术之后，罗米纳的两只眼睛就都可以看见东西了。