To most people a gas turbine engine is the huge cylinder bolted beneath the wing of a commercial airliner, although they are also widely used in stationary power plants.
You have to mix oil into the gas in a two-stroke engine because the holes in the cylinder wall prevent the use of rings to seal the combustion chamber.
在二冲程发动机中你必须混和燃料和气体，因为气缸壁上的孔阻止使用活塞环密封燃烧室。
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When the Volt's battery pack is discharged, the 1.4-liter gas-powered four-cylinder engine kicks on to spin the 74-hp generator.