目前铅和甲基叔丁基醚(MTBE)等添加剂被叫停，取而代之的是在汽油中添加少量酒精，这样提升辛烷水平能防止负载中引擎产生爆震。
With lead and MTBE additives now phased out, spiking petrol with a small amount of ethanol raises its octane level enough to prevent the engine from "knocking" under load.
生物性纤维素还有一个优点，就是可以转变成任何形式的燃料——酒精、常规汽油、柴油甚至航空燃油。
Cellulosic biomass can also be converted to any type of fuel-ethanol, ordinary gasoline, diesel, even jet fuel.
这在短期内比较昂贵，但它可能让你的车辆改用汽油、酒精或动植物油。
It can be quite expensive in the short term but it is possible to refit your vehicle to run on gas, ethanol or used fats and vegetable oils.
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