虽然174个国家批准了公认存在缺陷的《京都议定书》以降低碳排放水平，但美国和欧盟在这一问题上的分歧依然存在。
Although 174 nations approved the admittedly flawed Kyoto accords to reduce carbon levels, the arguments between the US and the EU on this issue still exist.
然而收益也将同样可观：可以节省电能，减少发电投入和降低碳排放量。
Yet the benefits also promise to be huge: power savings, reduced investment in electricity generation and lower carbon emissions.
温哥华冬奥此次之所以能够大幅降低碳成本，部份要归功于水力发电取得容易。
The significantly lower carbon cost of the Vancouver Olympics is in part due to their easy access to hydroelectric power.
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