Flight engineers monitor the engines, fuel consumption, and functioning of aircraft systems during flight.飞行工程师在飞行过程中监控发动机的运行、燃料消耗情况和飞机系统的运转。We need to cut down on our fuel consumption by having fewer cars on the road.我们需要通过减少路上行驶的车辆以降低燃料消耗。The car's engine yields more power while using less fuel.这款汽车发动机功率更大，燃料消耗更少。