Thus, a two-cycle engine fires twice as often as a four-cycle engine.

这样说来，两冲程发动机的点火次数是四冲程发动机的两倍。

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For years he had contemplated the inefficiencies of the traditional four-stroke Otto cycle engine (named for its 1876 developer, Nikolaus A. Otto).

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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.

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During the class, we walked through my Desire Engine framework, a four-step cycle that creates preferences and usage habits.

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