I think, though, that even in the USA, ethanol is still only used as an additive to gasoline, or petrol.
不过我认为，即使在美国，乙醇仍然只用作汽油的添加剂。
Ethanol, which is used mainly as an additive to petrol, is not a particularly good fuel: it offers only about two-thirds as much energy as petrol and can corrode pipelines and car engines.
主要用来添加在汽油中的乙醇，并不是非常好的燃料：其能量密度只有汽油的三分之二，而且会对汽车引擎和管路造成腐蚀。
Ethanol, which is used mainly as an additive to petrol, is not a particularly good fuel: it offers only about two-thirds as much energy as petrol and can corrode pipelines and car engines.
主要用来添加在汽油中的乙醇，并不是非常好的燃料：其能量密度只有汽油的三分之二，而且会对汽车引擎和管路造成腐蚀。
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