好词典

cataract

UK /ˈkætərækt/US /ˈkætəˌrækt/

词源

源自拉丁语 'cataracta'(瀑布/闸门),后经法语进入英语,既指瀑布也指眼疾(因视线模糊如同被水帘遮挡)。

noun

❶ 指眼睛晶状体变得混浊的疾病,会导致视力模糊,常见于老年人。若不治疗可能致盲。

“My grandmother had surgery to remove her cataract.”

(我祖母做了手术摘除白内障。)

“Cataracts often develop slowly and can affect one or both eyes.”

(白内障通常发展缓慢,可能影响单眼或双眼。)

❶ 指大瀑布,尤其指水量巨大、落差高的瀑布,常见于地理描述。

“We heard the roar of the cataract from miles away.”

(我们在几英里外就听到了大瀑布的轰鸣。)

“The boat couldn't get too close to the powerful cataract.”

(船只无法靠近那气势磅礴的大瀑布。)

同义词:waterfall, cascade, falls

常见短语

cataract surgery — 白内障手术,通过移除混浊的晶状体并植入人工晶体来恢复视力。

“Modern cataract surgery usually takes less than 30 minutes.”

(现代白内障手术通常耗时不到30分钟。)