They ran out of fuel.

他们的燃料用完了。

industrial research into cleaner fuels.

对更清洁燃料的产业研究。

The country needs to cut its fuel consumption.

该国需要减少其燃料消费。

The result will inevitably fuel speculation about the prime minister's future.

该结果将不可避免地加剧人们对首相前途的猜测。