目前，商业，工业和公共建筑的碳排放占了国家碳排放总量的18%。

Currently, commercial, industrial and public buildings account for 18 percent of the country's emissions.

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比如，在1990年和2008年间，欧盟国家在其领土内减少了碳排放总量的6%。

Between 1990 and 2008, for example, European Union countries reduced total carbon emissions in their own territories by 6%.

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各国应考虑实行全球碳税或“总量控制和排放权交易”制度，即允许各国排放一定数量的二氧化碳或将排放权出售给其他国家的制度。

Nations should instead consider a global carbon tax or a “cap and trade” system that would allow countries to emit a given amount of CO2 or sell permits to other countries.

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