As the air inlet diameters increase, the intake central swirl is intensified and thus fuel evaporation in the first combustion chamber is improved.

加大进气孔直径使进气中心涡流增强，燃油在一级燃烧室中蒸发量增加。

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The most plausible justification for higher taxes on automobile fuel is that fuel consumption harms the environment and thus adds to the costs of traffic congestion.

提高汽车燃油税最合理的理由是，燃料消耗会损害环境，从而增加交通拥堵的成本。

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The current low fossil fuel price environment will thus certainly delay the energy transition from fossil fuel to clean energy sources.

因此，当前化石燃料价格较低的环境必然会推迟从化石燃料向清洁能源转型的过程。

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Despite their safety risks, they are increasingly attractive to aircraft makers as a way to cut weight and thus improve fuel efficiency.

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The most likely cause of a future increase in world oil prices, and thus diesel fuel prices, is stronger growth of the global economy.

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This allows the vehicle to run at maximum torque all the time, and could thus reduce fuel consumption by up to 30%, according to Peter Augustsson, the company's president.

ECONOMIST: Fuel economy