天然气可直接用来开动汽车和其他类似的车辆，但要把发动机改装一下。

Natural gas can be used directly to power cars and other similar vehicles by converting the engine .

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一辆尚处于实验阶段的清洁能源汽车依靠天然气行驶。另一辆使用从谷物蒸馏而来的酒精。第三辆则装有由氢燃料电池提供能量的零排放发动机。

One experimental clean-energy car runs on natural gas. Another USES ethanol distilled from corn. A third has a zero-emissions electric motor powered by a hydrogen fuel cell.

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目前天然气发动机的研究与开发正成为我国汽车发动机行业的一个热点。

Nowadays the research and development of CNG engine is coming into a hotspot in engine industry of our country.

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