In one study, light smokers were found to be more than twice as likely to get cataracts as non-smokers.一项研究发现, 偶尔吸烟者患白内障的可能性是不吸烟者的两倍以上。

an operation to remove the cataracts白内障切除手术

The boat was swept into a raging cataract.小船被卷入到狂暴的瀑布中。