... fuel desulphurisation 燃料脱硫作用 fuel economy 燃料经济学; 节约燃料 fuel economy penalty 燃料经济性的缺陷 ...
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从经济学的角度来看，为了应对负外部性，原则上应该征收的税收是准确的：对一升燃料征收的税应该等于使用一升燃料所造成的危害。
Economics is precise about the tax that should, in principle, be levied to deal with negative externalities: the tax on a liter of fuel should be equal to the harm caused by using a liter of fuel.
几个因素将决定转向生物燃料的经济学，包括经济规模和在交通中使用乙醇的国家政策。
Several factors will determine the economics of moving to biofuels, including economies of scale and national policies for using ethanol in transport.
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