The car was powered by a four cylinder air-cooled engine.

这辆汽车是由一个四缸气冷式发动机驱动的。

《柯林斯英汉双解大词典》

Around the engine cylinder is a water jacket.

围绕着发动机汽缸的是一个水套。

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We have seen how the mixture of air and fuel is delivered by the fuel system to the engine cylinder, where it is compressed, ignited, and burned.

我们已经了解油气混合燃料是如何通过燃料供给系统输送到发动机气缸，并在气缸中压缩、点火、燃烧的。

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Next year Ford will offer a new Focus compact car in Europe, with a one-litre, three-cylinder engine that performs as well as the 1.6 litre, four-cylinder engine it replaces, yet uses about 20% less fuel.

ECONOMIST: Carmakers: Revenge of the petrolheads | The

When powered by gasoline, the C-MAX Energi uses the all-new 2.0-liter Atkinson-cycle four-cylinder engine - powerful and fuel efficient and among the most advanced non-turbocharged four-cylinder powertrains Ford has ever offered.

ENGADGET: Ford's 2013 C-Max Energi rolls out 95 MPGe, arrives later this fall

The company announced at the Los Angeles Auto Show that the U.S. version of its Mazda 6 midsize sedan, which got a major redesign for the 2014 model year, will offer a new four-cylinder diesel engine, in addition to a conventional four-cylinder gasoline engine.

FORBES: Mazda Bets Big On Diesel With The All-New 2014 Mazda 6