HAL's voice is soothing and friendly, a welcome change in a fast-paced world.

HAL的语音温柔而友好，快节奏的世界正需要这样的变化。

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While existing cities look for ways of becoming more environmentally friendly, a number of new ones are planned that intend to be totally green.

当现存的城市正在寻求加强环保的途径之时，一些新建的城市被设计走彻底环保的道路。

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While existing cities look for ways of becoming more environmentally friendly, a number of new ones are planned that intend to be totally green.

当现存的城市正在寻求加强环保的途径之时，一些新建的城市被设计走彻底环保的道路。

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