According to Greenpeace, emissions from tar sands extraction could growto between 127 and 140m tonnes by 2020, exceeding the current emissionsof Austria, Portugal, Ireland and Denmark.

据绿色和平组织说，到2020年，因焦油砂开采产生的排放量将增长到12700至14000万公吨，超过奥地利、葡萄牙、爱尔兰和丹麦目前的排放量。

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In one embodiment, the wood tar is subject to a separation process prior to the supercritical extraction to remove a substantial part of the unwanted components.

在一个实施方案中，在超临界提取之前使木焦油经历分离过程以去除绝大部分的所不希望的组分。

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The smoke extract is with the present method produced by means of supercritical extraction of fractions of the wood tar.

使用本方法通过超临界提取木焦油的级分生产烟提取物。

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Unable to stop Canadian oil drilling and tar sand extraction programs, environmental groups are now trying to block any pipeline that is proposed out of the oil producing regions.

FORBES: Keystone XL: Voting for the Stone Age

He has batted away all criticisms of the Albertan tar sands, where oil extraction is an especially dirty business, and placed his faith in carbon capture and storage, an unproven and expensive technology.

ECONOMIST: Canada's general election