It was actually a tricycle with a petrol motor at the rear.

那实际上是一辆后面有汽油发动机的三轮车。

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She put diesel fuel, instead of petrol, into the tank causing the motor to seize up.

她把柴油代替汽油灌入油箱，造成发动机失灵。

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Hybrid vehicles, such as Toyota's top-selling Prius, switch between a petrol engine and electric motor.

像丰田销量最好的普锐斯(Prius)这样的混合动力汽车，会在汽油发动机和电力马达之间切换。

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Given a free hand in the design, his team developed a continuously variable transmission system that allows the petrol engine and electric motor to work separately or in tandem.

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In addition to the petrol engine and electric motor, the LF-CC hybrid drive system further comprises a generator, a high-performance battery, a power split device which, via planetary reduction gears, combines and re-allocates power from the engine, electric motor and generator according to operational requirements, and a compact power control unit to govern the high speed interaction of the system components.

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It combines a petrol engine with an electric motor which charges its batteries.

BBC: NEWS | Programmes | Breakfast | Low carbon family: "Green" cars