"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?

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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。

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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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