It's a much more complicated procedure. 手术过程要复杂得多

510. Dr. Burke, Why wasn't this mentioned before?
     伯克医生 为什么之前没有跟我们提及
511. Dr. Karev.
     克莱夫医生
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

来自《实习医生格蕾 第一季 第八集 Grey's Anatomy S01E08》第 513 行