It should become smaller, safer, and more economical, and should not be powered by the gasoline engine.

它应该变得更小、更安全、更节油，而且不应该由汽油发动机驱动。

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A gasoline engine drives the motorboat.

汽油引擎推动汽船。

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In his application, Selden described a machine with a gasoline-driven, combustion-type engine that sat in front of the driver.

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。

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The company announced at the Los Angeles Auto Show that the U.S. version of its Mazda 6 midsize sedan, which got a major redesign for the 2014 model year, will offer a new four-cylinder diesel engine, in addition to a conventional four-cylinder gasoline engine.

FORBES: Mazda Bets Big On Diesel With The All-New 2014 Mazda 6

Conventional hybrids use mainly the gasoline engine for propulsion, drawing on the electric drive and batteries only occasionally to (impressively) improve gasoline efficiency.

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The gasoline engine drives the front wheels, but it also sends some current to the batteries.

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