And blending ethanol into ordinary petrol, or burning it directly in special "flex-fuel" engines, reduces greenhouse-gas emissions.
把乙醇掺入普通汽油之中,或者直接用在特殊的“乙醇燃料”引擎中,可以减低温室效应—废气排放。
It can be extracted without burning a fossil fuel such as coal, gas, or oil.
它在采掘过程中无须燃烧如煤炭,煤气或石油这类矿石燃料。
Notably, it did not create the smoke or soot associated with coal and oil burning.
值得称赞的是波浪能不会产生烟雾,或者煤和油燃烧产生的烟雾相关的污染物。
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