"Flip" is a short, sharp word for a short, sharp action. "Flip-flop" arose in imitation of the action of going quickly back and forth.
他们听上去都是拟声词 flip音节短促尖锐 用以描述快捷疾速的动作.flip-flop的发音模拟快速往复的动作.flap听上去不正象旗帜和船帆在风中拍打的声音吗?
If the idea comes first, then action merely conforms to an idea, and therefore it is no longer action but imitation, compulsion according to an idea.
如果先有观念，而行动只是为了符合观念，那么它不是行动，而是模仿，是依据观念所做的行为。
Mirror neuron system plays important roles in language evolution, action recognition and understanding, behavior imitation and so on.
镜像神经系统在语言进化、动作识别与理解、行为模仿等方面都起着重要的作用。
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