In addition to low emissions, natural gas can also be used as a petroleum fuel substitute or extender as in the case of dual fuel engines.

除排放低外，天然气可以替代石油燃料，或作为双燃料发动机的混合添加物。

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The increasing use of dried animal waste as a substitute fuel has also hurt the soil because this valuable soil conditioner and source of plant nutrients is no longer being returned to the land.

人们开始越来越多地使用脱水后的动物粪便作为替代燃料，这同样会损害土壤，因为这些珍贵的土壤改良剂和植物养分的来源将无法再回归到土壤之中。

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The sea water appears to have been brought in as a substitute for the regular water used as coolant for the uranium fuel rods at the heart of the reactor.

海水是作为普通水的替代品而引入的，普通水是反应堆核心铀燃料棒的冷却剂。

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One approach would peg the reserve volume to the time required in an emergency to transition the economy from natural gas to a substitute fuel.

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Ethanol subsidies began decades ago as a small test to see if corn could produce a fuel that would be an appropriate substitute for gasoline.

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But wind farms--which substitute for coal as a fuel for electricity--have little to do with oil prices.

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