The EU negotiating position offers to slash greenhouse gas emissions by between 80-95% by 2050 and to deepen cuts from 20 to 30% by 2020 if other world powers sign up for similar action.

欧盟的谈判立场提出，如果其它世界强国签署了类似的行动方案，欧盟将在2050年前削减温室气体排放80 - 95%，在2020年前进一步从20%削减到30%。

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Some countries have pledged to reduce their greenhouse-gas emissions by 80% by 2050, and campaigners are calling for cuts of 90% or even 100%.

一些国家承诺在2050年之前，削减80%的温室气体排放量，但社会人士呼吁削减量应上升至90%，甚至100%。

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Another us delegate said informally that us opposition to mandatory cuts in emissions of the greenhouse gas carbon dioxide had not changed.

另一位美国代表非正式地表示，美国反对强制削减温室气体二氧化碳，这一立场没有改变。

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They will also argue that the only way to prevent the Arctic becoming entirely ice-free in summers in the coming decades is to make drastic cuts in greenhouse gas emissions.

BBC: US ordered to act on polar bear

The brothers power their farm and cheese factory using an anaerobic digestion system, which turns organic waste into fuel, and cuts down on greenhouse gas emissions.

WHITEHOUSE: Council on Environmental Quality Blog

There are many reasons for the continuing delay in turning the targets that were agreed to in Kyoto in 1997 into a workable programme of cuts in greenhouse-gas emissions.

ECONOMIST: Economics focus