但每节约一分钟的飞行时间，可以减少大约60升的燃料消耗和削减160公斤的二氧化碳排放量，所以，努力还是值得的。
But every minute of flying time saved can reduce fuel consumption by some 60 litres and cut 160kg of CO2 emissions, so the effort is well worthwhile.
节约 能源、燃料替代以及能源密集型重工业的重要性的降低，这些都减少了石油消耗量。
Energy conservation,a shift to other fuels and a decline in the importance of heavy,energyintensive industries have reduced oil consumption.
其次，这也能减少交通成本和燃料消耗量，又能起到减少城市运营成本和节约能源的作用。
Secondly, it can decrease transportation costs and fuel consumption, which functions to reduce operating costs of the city and save energy.
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