1 [U] material that is burned to produce heat or power 燃料
2 [C] a type of fuel 某种燃料: I think gas is the best fuel for central heating.依我看，煤气这种燃料最适用于中央供暖系统。
fuel²
/ˈfju:əl ||; ˈfjuəl/verb [T] (fuelling;fuelled) (US 美 fueling;fueled) to make sb feel an emotion more strongly 激起；刺激: Her interest in the Spanish language was fuelled by a visit to Spain.她去了一趟西班牙，对西班牙语的兴趣更浓了。