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.

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。

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The total cost of implementing such a nationwide network in Israel is equal to less than seven days of fuel use by current petrol-engine cars in the country.

在以色列实施这一全国性网络的总成本差不多还低于现在以色列全国7天的总汽车油费。

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Fuel efficiency equal to or better than four-strokes.

等于或优于四冲程燃油效率。

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While that argument makes the alarmist blogs and MSNBC, it neglects that, everything else being equal, if hurricanes are becoming rainier, they must be getting stronger, as the fuel that drives the kinetic whirl of the tropical cyclone is the heat released by the condensation of water.

FORBES: Climate Change Alarmists Can't Seem To Buy A Major Hurricane