Even though you save on kerosene, it takes more than three years after purchase for the total cost of running a compact fluorescent lamp to drop below that of a kerosene lamp and fuel.
如果不用煤油灯，节省下来的灯油钱，要三年才抵得上购买一个紧凑型灯的花费。
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。
Shanghai Airlines revealed that this year's 1-9 month's fuel costs account for the total cost of operating ratio has reached about 45%.
上海航空公司透露，今年1-9月份的燃油费用的经营总成本的比例占了45％以上。
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