n.大瀑布；奔流；[医]白内障

The way is blocked by the tall cataract. 高悬的大瀑布挡住了去路。

In a recess in the rocky cliffs behind the cataract is a cave. Lying hidden by the sheets of water cascading down, it is known as the Water Curtain Cave. 大瀑布后面岩壁上，凹处有一洞，洞口为瀑布所掩，故名“水帘洞”。

The good news from the battlefields is becoming a cataract. 战场上传来的好消息正在变成一道奔流。

He has developed a cataract. 他患上了白内障。

Cataract may result from long standing diabetes. 长期的糖尿病可能会引起白内障。