Hybrid cars won't be either, for the same reasons, but until fully electric vehicles run off renewable sources are viable, this is the next best thing.
2
充电式混合动力汽车只能保证第一次充电是全电动的；最终还是要使用汽油引擎。
Plug-in hybrid cars can only travel so far on a charge; eventually, the gasoline engine kicks in.
3
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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