解决这个问题的方法之一便是混合动力汽车，即既有汽油发动机又有电力发动机的油电混合动力汽车。

One method of solving the problem was a hybrid car, one that ran partly on petrol and partly on electricity.

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我们要让使用内燃机的汽车变成混合动力，油电混合，电池驱动，以及燃料电池驱动的汽车。

We will need to switch from cars with internal-combustion engines to hybrids, plug-in hybrids, battery-powered, and fuel-cell-powered vehicles.

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油电混合动力并不是全电动汽车的唯一可用选项。

Petrol-electric hybrids are not the only alternative to all-battery cars.

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