cataract
cataract
[ˈkatərakt]
noun
[ˈkatərakt]
noun
- a large waterfall
大瀑布
■a sudden rush of water; a downpour
急流，奔流；倾盆大雨
the rain enveloped us in a deafening cataract.
震耳欲聋的暴雨把我们包围了。 - a medical condition in which the lens of the eye becomes progressively opaque, resulting in blurred vision
白内障
she had cataracts in both eyes.
她两只眼睛都有白内障。
- late Middle English: from Latin cataracta 'waterfall, floodgate', also 'portcullis' (medical sense 2 probably being a figurative use of this), from Greek kataraktēs 'down-rushing', from katarassein, from kata- 'down' + arassein 'strike, smash'
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