Geothermal is four times as efficient as fossil-fuel-burning furnaces and twice as efficient as a conventional air conditioner.

地热系统的效率是石油燃料炉子的4倍，是常规空调的2倍。

youdao

With fossil fuel-burning power stations continuing to be built rather thanclosed down there has been recent focus on technologies that capture and storethe carbon pollution produced.

随着燃烧化石燃料的发电站还在继续建造而不是关闭它们，这些发电站最近聚焦于捕捉并封存它们制造的碳污染的技术。

youdao

Energy firms often call gas a clean fuel: burning it releases roughly half as much carbon dioxide into the atmosphere as burning coal does.

能源公司常常把天然气称作纯净的燃料：燃烧天然气进入大气层的二氧化碳量大致上是煤炭的一半。

youdao

Fuel-burning devices can create carbon monoxide gas because not all of the fuel is burned.

VOA: special.2011.01.25

Many so-called greenhouse gases, such as carbon dioxide, come from burning fossil fuel such as oil or coal.

VOA: standard.2009.12.16

The bioreactors will grow algae that can produce ethanol fuel through a special process that involves using carbon dioxide from nearby coal-burning power plants to promote faster growth of the algae.

VOA: standard.2009.09.02

Airlines get a bad environmental rap for their fuel-burning emissions, but several are taking steps to reduce their mile-high carbon footprints.

BBC: How eco is your airline?

The more sophisticated missiles are programmed to steer towards heat (such as that given off by a fuel-burning jet).

ECONOMIST: The shoulder-held threat | The

What does a dirty-fuel player like Consol want with a clean-burning fuel like natural gas?

FORBES: With Gas Deal, Consol Strives To Turn Coal Green