这辆汽车是由一个四缸气冷式发动机驱动的。

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

《柯林斯英汉双解大词典》

他接着说：“那是一台伊士佳牌五个马力的空气冷却外挂式发动机。”

Then he said, “It was a five-horsepower, air-cooled Eska outboard motor.”

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他接着说：“那是一台伊士佳牌五个马力的空气冷却外挂式发动机。”

Then he said, “It was a five-horsepower, air-cooled Eska outboard motor.”

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