1.Our use of fossil fuels is the main source of excess greenhouse gases.
我们对化石燃料的使用是温室气体过量的主要来源。
2.Earth was already in one of its warm interglacial periods when we started burning fossil fuels.
当我们开始使用化石燃料时，地球已经处于温暖的间冰期之一。
3.This was also the time of the industrial revolution, which brought a tremendous increase in the use of fossil fuels such as coal.
它也是在工业革命时期的，带来了煤等化石燃料使用量的巨大增长。
4.It would help fight global warming by cutting down on fuel consumption as hitchhikers would be using existing fuels.
这将有助于通过减少燃料消耗来对抗全球变暖，因为搭便车的人将使用现有的燃料。
5.The law would encourage companies to switch from coal to cleaner fuels.
法律会鼓励各公司从用煤转向使用更清洁的燃料。
6.In a way that means they have to cost less than fossil fuels—certainly when you're filling up your car.
在某种程度上，这意味着它们的成本比化石燃料要低——当然是当你给汽车加油的时候。
7.We should lower the use of fuels that release greenhouse gases.
我们应该减少使用那些会释放温室气体的燃料。
8.But that potential pales beside the never-ending demand for crop-based fuels.
但与对农作物燃料永无止境的需求相比，这种潜力就显得微不足道了。