That would involve putting a floor under the price of fossil fuels by imposing a price on carbon emissions and import duties on oil to keep the domestic price above, say, $70 per barrel.

这要求将化石燃料的价格保持在一定水平之上。 具体可以通过确定二氧化碳排放价格，征收石油进口关税等，以使国内石油价格维持在一定水平（比如说每桶70美元）之上。

youdao

Russia had just agreed to drop duties on exports of crude oil to its former Soviet subject state.

俄罗斯刚刚同意了下调对前苏联成员国原油出口关税。

youdao

Gauging, in addition to referring to the overall duties of the gauger, means specifically the act of measuring the height of the oil in the tank.

计量除指计量工的全部工作外，还特指测量罐内油品的高度。

youdao

Crude-oil costs are a bigger slice of the prices American consumers pay for petrol: lower sales taxes and fuel duties mean swings in oil markets have a bigger effect on pump prices.

ECONOMIST: Debt and deflation

But the Asian producers started making more SUVs and pickup trucks in their North American factories to escape the duties, and then a rising oil-price led many motorists to abandon these often gas-guzzling vehicles.

ECONOMIST: Ford

Fuels would be taxed according to their CO2-generating potential (ie, coal more than oil, and oil more than gas) rather than the miscellaneous system of duties to which they are now subjected.

ECONOMIST: A cooling off period