One company has presented an idea in which metal strips inserted in pavements and roads operate fly wheels by means of a piston action using hydraulic fluid.
一个公司提出这样想法：嵌在人行道和路面上的金属条用液压活塞的作用使飞轮转动。
2
That means the average hydraulic hybrid would save more than 5,800 gallons of diesel fuel each year over a conventional diesel.
这就意味着一辆普通的液压混合动力车比一辆传统的柴油车每年将节省5800加仑的柴油。
3
That means the average hydraulic hybrid would save more than 5, 800 gallons of diesel fuel each year over a conventional diesel.