What has turned the lowly four-banger into such a ready replacement for its bigger brethren is the widespread use of turbo-charging and direct fuel injection.

卑微的四缸引擎能如此迅速地替代其他更多缸数的引擎的原因是废气涡轮增压和燃油直喷技术的广泛使用。

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It can reduce the fuel consumption to adopt the technique of hot delivery and hot charging.

供料方式采用了热装热送，降低了燃料消耗。

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Adopting the quick pipe connector to improve system tightness. After being parked for some time, the vehicle can be started without stoping for charging, thus realizing the fuel economy.

采用快插接头，改善系统密封性，停放一段时间后，不需停车充气即可起步，节省油料；

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While Airbus announced a much smaller order from Turkish Airlines, some US airlines like Jet Blue and Delta have been hiking fares and even charging fuel surcharges on certain routes to compensate for rising fuel costs.

FORBES: Boeing Gets $10 Billion Chinese Order While JetBlue And Delta Hike Fares

He says that if the problems of congestion are to be tackled, there will have to be a switch from fuel duties to congestion charging.

ECONOMIST: Fuel tax

At that time, fuel duty would be cut as well and road charging introduced at 8p a kilometre for motorways and trunk road.

BBC: Clegg unveils road charging plan