This is the 3589th most frequent Chinese word.
燃油
Fuel oil.
Here, '燃油' is used as a noun referring to the fuel consumed by the vehicle.
车辆的燃油消耗量因驾驶条件而异。
The fuel consumption of the vehicle varies depending on driving conditions.
In this case, '燃油' represents the subject of price changes, underlying the economic context.
燃油价格上涨引发了公众的不满。
The increase in fuel prices has caused public dissatisfaction.
Here, '燃油' is mentioned in the context of environmental impact and alternative fuel usage.