Turn off air con: a car engine generates enough pollution without having to power an onboard air conditioning unit.

关上空调：一辆车就算不开随车空调，也已经产生足够的污染了。

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When you turn off the engine, you then use the momentum of the car to cruise along the highway.

关掉引擎，然后利用车的动力沿着公路稳速行驶。

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The stop/start-enginenotifications could switch the engine off and on automatically, or they couldtrigger alerts to the driver to turn it off/on manually.

这种引擎开/关通知可以自动地在开启与关闭之间切换，或者该系统也可以给司机发送“戒备信号”让司机自己动手开启或关闭汽车引擎。

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Unidentified Policeman: Can you turn off the engine and roll down all your windows, please?

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The first thing to notice inside is the pleasant chime that sounds whenever you enter the car or turn off the engine.

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Many of these gadgets can be used to turn off a check engine light, which can be a money-saver if you avoid a trip to the garage simply because the gas cap was loose, a common cause of check engine alerts.

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