This is an incredibly difficult decision. 这很难决定

642. There's little chance of memory loss or him losing himself,
     失忆和性格改变的可能性也小些
643. but it would only give Jorge maybe three to five years.
     但他大概只能活三到五年
644. Three to five years?
     3到5年
645. This is an incredibly difficult decision.
     这很难决定
646. If you have any more questions or you need to talk to me,
     如果有任何问题 或者想再讨论
647. I'm here, okay?
     请来找我 好吗
648. Hey.
     你好

来自《实习医生格蕾 第一季 第四集 Grey's Anatomy S01E04》第 645 行