对一个男人来说，要袖手旁观一只老猎犬这样以一敌众地战斗实在太难了，特别是如果这个男人像我一样曾有过一段珍藏心底的记忆。

It's hard for a man to stand and watch an old hound fight against such odds, especially if that man has memories in his heart like I had in mine.

youdao

在仅给了一段时间学习的果蝇中间，记忆形式只持续了一天。

In flies given a single episode of learning, memory formation lasts only a day.

youdao