在树丛的那一边，一架小飞机的发动机空转着。
不要让发动机空转。
我在汽车里待着而让发动机空转着。
汽车的发动机空转了几分钟。
我停住汽车，让发动机空转。
那司机等候绿灯放行，让发动机空转著。
这架飞机将很难放缓的土地时，发动机空转了。
The plane would have a hard time slowing down to land when the engine was idling too.
例如，所有宝马制造的四缸发动机(包括汽油发动机及柴油发动机)都会装有“启动-停止”装置，以减少发动机空转。
For example, all BMW's four-cylinder engines (both petrol and diesel) will come with "start-stop" technology to cut the engine when it is idling.
当火车头在相对恒定速度下前进或者空转时，这时电池就为马达提供能量，柴油发动机不工作。
When the locomotive is traveling at a constant speed or idling, the battery rather than the diesel engine can power the motor.
邻居们从此经过时，他们放慢车速向我打着招呼，还有几个人会停下车来闲聊，而让发动机隆隆地空转着。
My neighbors slowed their cars to wave as they passed, and a few people stopped to chat, their engines rumbling idly.
解释的绕圈只是脱离车轮的，思想发动机的空转。
"The explanatory" runaround "RACES the mental engine, disengaged from the wheels."
在发动机的转速高于正常空转转速时，千万别换到驻车档。
Never shift from the Parking mode when engine rpm is higher than normal idle.
这发动机在空转（怠速）的时候非常安静。
发动机在空转着。
卡车发动机不再空转，这大大改善空气品质，又节省能源，为运输业者省下大笔油费支出。
Reducing truck idling helps to improve air quality and conserve fuel, saving money for long-haulers already faced with rising diesel prices.
汽车发动机关闭之前快速空转。
汽车发动机关闭之前快速空转。
在我们等候另一辆汽车时，发动机在轻轻地空转着。
The engine ticked over softly while we waited for the other car to come.
在更换机油及过滤器前，将本品加入机油室内，并使发动机怠速空转3分钟；
Before changing the oil and filter, add this product into the oil tank, and start the engine idling for about 3 minutes;
在更换机油及过滤器前，将本品加入机油室内，并使发动机怠速空转3分钟；
Before changing the oil and filter, add this product into the oil tank, and start the engine idling for about 3 minutes;
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