| [/ˈkætərækt; ˋkætəˏrækt/] n 用法:
1 large steep waterfall （大而陡的）瀑布. 用法:
2 (medical 医) (a) disease in which the lens of the eye becomes cloudy, causing partial or total blindness 白内障.
(b) area clouded in this way 白内障的晶状体:
an operation to remove cataracts 白内障（晶状体）摘除手术. |