Staged combustion avoids the usual waste of fuel or oxygen used to drive the pumps in an engine with the conventional gas-generator cycle.

分级燃烧，避免了浪费燃料或氧气通常用于驱动发动机与传统的燃气发生器循环水泵。

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Matthew Yglesias has this right: there were already faster fighter planes in the late ’60s, and by the early ’70s you had the Concorde, but it turned out to be a huge waste of fuel.

Matthew Yglesias的说法是对的： 在六十年代末，更快的战斗机已经出现。 到了七十年代初期还有了协和式客机，但它最终不过是浪费了大量燃料而已。

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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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European officials say this sort of tough approach may prove necessary but sigh that it is getting harder to impose such legal mandates, even in the directive-crazy EU. In the meantime planes will continue to fly tortuous routes, waste tonnes of fuel and be subject to ever worsening delays.

ECONOMIST: Aviation

Sending oil elsewhere to be refined will waste massive amounts of fuel for transportation.

FORBES: The Hidden Price Of Radical Environmentalism

"The dumping of illegally laundered fuel waste is costing ratepayers thousands of pounds every year by Councils having to remove the waste and these sums are coming straight from the rates of local people, " he said.

BBC: Stolen fuel waste trailer abandoned near Castlewellan