Hybrid electric vehicle, driven by the engine and electromotor, has the virtues of low pollution, high efficiency, and economical performance.

混合动力汽车是一种用发动机和电动机组合起来共同驱动的低污染、高效率和经济性能好的汽车。

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For an underground urban freeway is in an enclosed space, pollution from vehicle emissions can be collectively filtered and disposed with high-technical method.

城市地下快速路处在一个封闭的环境中，机动车尾气可通过高技术措施进行集中过滤和处理。

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As a new type of conveyances, Maglev Vehicle has aroused more and more attention because of its high velocity, comfortable riding, few pollution and low noise.

磁悬浮列车作为一种新型的交通工具，可以实现与地面无接触高速运行，目前正受到越来越多的关注。

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