煤炭和天然气主要用于发电，而石油主要用于给运输提供能量，但所有这些能源的价格是相互关联的。
Coal and natural gas are mainly used for electricity generation, whereas oil is used mostly to power transportation, yet the prices of all these energy sources are linked.
一些则喜欢核能，清洁的煤炭和天然气。
当美国还拥有充足的能生产氢的煤炭和天然气的供应时，有什么理由不喜欢它呢？
As America has abundant supplies of coal and natural gas from which hydrogen can be made, what's not to like about it?
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