认知科学，最终必须解释的事情之一是，为什么人远比其他动物在思维过程方面更灵活。
One of the things that cognitive science must ultimately explain is why humans are so much more flexible in their thought processes than other animals.
其它特征，如超长前臂和灵活的脚，则可追溯更远灵长类动物的过去。
Others, such as extra-long forearms and flexible feet, date from deeper in the primate past.
我很高兴能同时看见那么多活灵活现的动物，他们看上去又活泼又可爱。
I was pleased to see so many real animals at the same time. They seemed so lovely and active.
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