当然随着时间的推移，还有一种可能的情况会出现，那就是供应和需求之间可供回旋的空间也将越来越小，——比如说，俄罗斯自身对天然气的需求也正以每年超过2%的速度递增。
There is also the possibility that the supply and demand situation itself might become less elastic - Russia's own demand for gas, for instance, is growing by over 2% annually.
比如说煤炭，石油和天然气，包括永远也不可能开采的那部分。
One type alone may hold double the carbon of all of the terrestrial fossil fuel, such as coal, oil and natural gas, including stores that could never be recovered.
与之相对比，美国看起来更愿意使用一些矿物燃料，比如说炭或者天然气。
By contrast, the United Stated appears more than willing to use supplies of fossile fuels, such as coal or natural gas.
与之相对比，美国看起来更愿意使用一些矿物燃料，比如说炭或者天然气。
By contrast, the United Stated appears more than willing to use supplies of fossile fuels, such as coal or natural gas.
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