For oil replacements, cheap suddenly looks less of a problem.

对于石油的替代品来说，价格突然不是什么问题了。

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Oil is the biggest single energy source and replacements for the energy-dense, easily transported fuel are hard to find.

石油是最大的单一能源和替代品，因为高能量且容易运输的燃料太难找寻。

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European officials say an embargo would either contain a grace period to leave time for refiners to find replacements for Iranian oil or make exceptions for existing long-term supply deals.

WSJ: Oil Market's Iran Fears Might Be Overdone

Then there is also the hedge with tech-centric ventures chasing molecular replacements for oil.

FORBES: U.S. Needs Deepwater Drilling Or It's In Deep Doo-Doo

Like Europe and the North Sea, the United States will need to find replacements for Mexican oil, which has historically been a key U.S. supply source.

FORBES