一种燃料组合物包含燃料和燃料添加剂浓缩物。

A fuel composition comprises fuel and the fuel additive concentrate.

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一方面，公共事业团体大多有富余的燃料，所以他们能（在缺少天然气的条件下）调整自己的燃料组合，但司机却不能在缺油的情形下自我调节。

For one thing, utilities mostly have spare capacity and can thus adjust their fuel mix in a way that car drivers confronted with an oil shortage cannot.

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它们在一起的组合叫燃料棒。

The assembly is called a fuel rod.

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