Five kinds of running experiment of ignition system, related experiment of ignition close Angle and touch point gap, experiment of the relation between the engine rev and ignition frequency.

五种点火系统的运行实验，点火闭合角与触点间隙的关系实验，发动机转速与点大频率之间关系的实验。

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Stimulants rev your engine, and that includes boosting your metabolism.

兴奋剂加快你的引擎，包括明显增加你的代谢率。

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Don't rev up the engine too fast.

不要使发动机转速太快。

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Lamborghini and competitor Ferrari are more like Italian religions than brands, and the gusty engine rev never failed to elicit cheers from the relentless string of spectators lining the streets to catch sight of the unique convoy.

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Paddle-shifting the automatic transmission as you enter the corner, you'll hear the engine automatically rev to match the selected gear ratio blipping, it's called and the SL just rips along in a way no luxurious grand touring car has a right to.

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The engine started to rev as we taxied.

NEWYORKER: Leap of Faith