But until they are widely available, simple changes to the internal combustion engine-and the way we drive-could as much as double gas mileage.
但是，在这些汽车还没有广泛使用之前，对内燃机简单的改变以及我们驾驶方式的改变能使汽油里程加倍。
2
The internal combustion engine shuts down whenever the accumulator charge is sufficient to drive the motor.
每当蓄压器的电足够开动发动机时，这个内燃发动机就会关闭。
3
In his application Selden described a machine with a gasoline-driven, combustion-type engine that sat in front of the driver; a clutch; a foot brake; a drive shaft; and front-wheel drive.