fuelern.加油器(供油装置)fueln.燃料；刺激因素vt.供以燃料vi.加燃料Fuel Unspecified未分类燃料fuel electrolyte燃料电池电解质fuel power plant火电厂fuel performance燃料性质,燃料鉴定fuel oil residue燃料油残渣,重油,石油残油fuel combination混合燃料fuel gauge glass玻璃油量计fuel subassembly燃料组件fuel compactness可燃物密度fuel-tank vent油箱通风孔

1. If you lag your hot water tank, you'll save money on your fuel bill.
   如果你给热水箱装上外套，你就可以少付燃料费帐了。