Biofuel consumption may be as simple as throwing a log on a fire or as complex as burning a combustible gas derived from plant matter in a combined-cycle electricity-generating unit.

生物燃料消耗可作为简单，扔在火日志或如燃烧的可燃气体，植物物质产生的联合循环发电装置复杂。

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No electricity or heat is transmitted through the cable so fiber optic lighting is ideal where safety and fire protection is a concern.

没有电，热的传播途径是电缆，光纤照明，是理想，安全和防火是一个问题。

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Be aware that electricity may go out or that sprinkler systems or fire alarms may turn on.

罿要意识到可能会断电，火警以及自动喷淋装置可能会启动。

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Rather than relying on fire, electricity or natural gas, chefs at El Diablo heat their meat over a still-active volcano.

BBC: Dinner cooked by an active volcano

Only emergency vehicles - buses, taxis, fire engines, ambulances, police cars, rubbish trucks - and those powered by gas or electricity remain exempt from the ban.

BBC: News | Europe | Off the roads