一个紧密相关的理论认为，戏剧从主要为哑剧的、有节奏的或体操的舞蹈中演变而来，或者从模仿动物的噪音和声音演变而来。

A closely related theory sees theater as evolving out of dances that are primarily pantomimic, rhythmical or gymnastic, or from imitations of animal noises and sounds.

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没有了雨水，土地开始沙化，逐渐演变成我们今天所熟悉的大沙漠，迫使人类与动物背井离乡，到处寻找日益减少的水源。

Without rain, the land began to turn to the desert that we know today, leaving people and animals to seek ever-dwindling sources of water.

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这是我们重新认识爬虫类动物的一个巨大转折点。种种生存策略的迹象——例如亲代抚育和社会群体——在每一个不同的组群里的一再演变就是最好的证据。

It's a seismic shift for the way we think of reptiles, and evidence of how a survival strategy — like parental care and social groups — evolves over and over, in very divergent groups.

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So what follows, in one sense, that when Aristotle says that man is by nature a political animal and the city is by nature, the city can never be a universal state.

这响应了，亚里士多德所说,人类天生是政治动物,而城市是自然的演变，城市永远不能是一座万国之城。

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