求翻译：2、节约成本。“电动教练车”每小时只用1度电，按每天工作8小时算，一天只需要约5-8元钱的费用；而普通教练车每天要消耗15升左右的汽油或柴油。一台“电动教练车”每天能为驾校节省七八十元钱的开支。每年可节约燃料费20000元以上，是什么意思？

2, the cost savings. "Electric coach car" with only 1 kWh of electricity per hour, eight hours per day count, one day only offer cost 5-8 dollars; ordinary day coach cars consume 15 liters of gasoline or diesel. A "coach electric car" Driving a day to save seventy to eighty dollars for the expenses.

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2nd, frugal cost.“The electrically operated driver training car” each hour only uses 1 kwh electricity, according to works for 8 hours to calculate every day, one day only needs important contract 5-8 Yuan the expense; But the ordinary driver training car must consume the gasoline or the diesel oil

2, the cost savings. "Electric coach car" only 1 unit per hour, 8-hour day count, only need about $ 5-8 a day costs money and ordinary coach car consumes around 15 litres of petrol or diesel a day. One "electric coach car" for driving school to save every day seventy or eighty dollars ' worth of exp

2, the cost savings. "Electric coach car" only 1 unit per hour, 8-hour day count, only need about $ 5-8 a day costs money and ordinary coach car consumes around 15 litres of petrol or diesel a day. One "electric coach car" for driving school to save every day seventy or eighty dollars ' worth of exp