If the car needs more range, a gas engine kicks in to power a generator that creates additional electricity for the electric motor.

如果汽车需要更多的里程，燃气发动机就投入使用，产生额外的电能来驱动电机。

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GM has been selling the Chevrolet Volt plug-in electric car since late 2010, but it goes only 38 miles on electric power before a gas generator kicks in.

GM自2010年就开始销售雪佛兰伏特混合动力电动车，但仅凭电力系统只能行驶38英里。

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Development, manufacture and promotion of environment friendly, efficient and energy-saving industry welding gas, natural gas additive and natural gas-diesel dual-fuel electric power generator system.

具有环保、高效和节能特点的工业切割气体、天然气添加剂、天然气柴油双燃料发电等技术的开发、生产和推广；

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The 2013 Volt can travel an average of 38 miles on one full electric charge before its onboard gas-powered electric generator seamlessly switches on.

ENGADGET: Chevy Volt EcoHub app tells drivers how little they pay to charge, goads them into staying green (video)