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.
同样，同其它国家相比，由于广泛使用乙醇，巴西交通运输行业的碳排放水平较低。
Similarly, the Brazilian transportation sector is low - carbon in comparison to other countries, due to the widespread use of ethanol.
将武汉城市圈按照土地类型分为三类城市，收敛性分析发现它们均出现了不同程度的收敛，而且收敛于较高的碳排放水平。
Wuhan city circle could be divided into three categories according to the type of urban land. The results showed that they have suffered different degrees of convergence.
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