They found that the aircraft consumed as much as 15% less fuel (coupled with a reduction in carbon dioxide output).

他们发现，飞机消耗的燃料减少了15%（同时二氧化碳排放量也减少了）。

youdao

What if, with revelations around methane emissions, it turns out to be only a 10 or 20 percent reduction of carbon from coal?

他说，“如果计入甲烷排放的因素，结果发现天然气仅仅能削减煤炭10%到20%的碳排放强度，那该怎么办？

youdao

In addition, with a reduction of idle times, carbon emissions are dramatically lowered.

此外，随着汽车在路上空闲时间减少，二氧化碳的排放量大幅降低。

youdao

But since then China has restated its commitment to achieving a 40-45% reduction in carbon emissions per unit of GDP by 2020 compared with 2005.

ECONOMIST: Chinese foreign policy

Before Copenhagen, according to an analysis by the European Climate Foundation (ECF), a not-for-profit organisation devoted to climate policy, these commitments added up to an annual reduction of 3.6 billion tonnes of carbon dioxide, compared with business as usual, by 2020.

ECONOMIST: What countries are currently offering on climate

If the American Senate were to pass a climate bill that put a significant cost on carbon, and thus provided cuts of the same size as those expected under the cap-and-trade bill which passed the House of Representatives last year, America would be widely seen as having raised the stakes with a commitment to a reduction of just under 2 billion tonnes of carbon dioxide.

ECONOMIST: What countries are currently offering on climate