"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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The differences in bacterial abundance, diversity and hydrocarbon degrading potential are "slight" between plume samples and regular Gulf seawater, said Paul.

细菌的量繁种多，以及碳烃化合物的分解特性在油污带的样品和正常的海湾海水中的差别几乎没有，保罗说道。

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Paul, before Denver most polls gave Barack Obama a slight edge, often within the margin of error, but an edge.

NPR: After Conventions, McCain Takes Lead In Some Polls

Pope John Paul II had altered the voting process to allow a candidate to be elected with only a slight majority.

BBC: Pope Benedict (file image)