It lasts longer. 牛瓣膜更持久

512. The bovine valve has only been an option the last few years.
     牛心二尖瓣是近些年才用于临床治疗
513. It's a much more complicated procedure.
     手术过程要复杂得多
514. But the best part is actually it's superior to the pig.
     但最好的是它优于猪的瓣膜
515. It lasts longer.
     牛瓣膜更持久
516. What incredibly small fraction of your brain were you using?
     你刚才到底用没用脑子啊
517. - What? - Correct me if wrong,
     -怎么了 -我要说错了你可以指出来
518. but did you not present an alternative procedure
     你是不是没有征询主治医师

来自《实习医生格蕾 第一季 第八集 Grey's Anatomy S01E08》第 515 行