Then they fly out north for another couple of hours to drop off fuel at a fuel "cache" and then fly back again - and that's all before they can start to head out to us.

然后，他们又往北飞行数小时，去给一个加油站送燃料，随后返回——这些是飞往我们这里之前飞机要做的所有事情。

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"On an aircraft of that size, even a slight reduction in fuel burn makes a big difference to overall cost," said Paul Sheridan, Head of Risk Advisory at Ascend.

“对于这么大的飞机，哪怕是减少一点儿燃油消耗，对成本控制的效果也是很明显的。”来自Asend风险咨询公司的头儿paul Sheridan如是说。

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In theory microbial fuel cells can run on almost any kind of organic matter, says Chris Melhuish, head of the Bristol Robotics Laboratory, England.

英国布里斯托尔机器人实验室负责人Chris Melhuish说，微生物燃料电池在理论上几乎能在所有有机物上工作。

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Just another reason to keep your head held high (and to fuel that inner glow).

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Despite the slow sales of battery-powered cars, the head-start they have over fuel-cell cars gives them a definitive advantage in terms of price.

CNN: Hydrogen fuel-cell cars look to overtake electric autos

Earnings growth is also highly likely as there were no major hikes in prices of jet fuel, which is the single largest cost head for airlines.

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