Not surprisingly, companies that operate fleets of cars and trucks are among the first users of fuel-saving "eco-assist" systems.
那些经营汽车和卡车车队的公司，是第一批使用节能燃料“环保协助”体系的用户，这不足为奇。
2
This time, the chiefs drove to Washington in fuel-saving hybrid vehicles. And their companies presented detailed restructuring plans.
这次总裁们开着混合动力车来到华盛顿，递交了他们详细的重组计划。
3
Boeing and Airbus already are offering a new generation of larger jets built from fuel-saving lightweight composite materials instead of the ARJ21's traditional metals.