出租车司机把发动机发动起来。
在他的申请中，塞尔登描述了一种有汽油驱动的燃烧式发动机的机器，它就在司机的前面。
In his application, Selden described a machine with a gasoline-driven, combustion-type engine that sat in front of the driver.
司机一挂上挡，踩下油门踏板，发动机就重新启动了。
As soon as the driver puts the car in gear and touches the gas pedal, the engine starts back up.
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