人们常说金鱼的记忆只有三秒钟，但实际上它们能学会各种各样的东西，而且能记住很长时间。
People often talk of goldfish having three-second memories, but in fact they can learn all kinds of things, and remember them for quite a long time.
除非你拥有照相记忆，否则从一个烹饪节目学会烹饪方法可不容易。
Unless you have a photographic memory, following a recipe from a cooking show will be difficult.
但最终你学会了，并没有关于怎样从头学到尾的记忆。 这和睡行症患者的情况类似。
But eventuallyyou do, withno memory of having got from A to B. It's similar withsleepwalkers.
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