在温室气体减量数 量和「承诺期（commitment period）的相关 议题上，如何定义与承诺期间相关的目标，仍 有争议，许多国家认为需要一套科学评估分析 相关的方案。
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第二个承诺期的问题依然没有消失。
And the problem of the second commitment period has not gone away.
坎昆大会上就京都议定书通过的文本，原则上让第二个承诺期显得很乐观。
The text on the Kyoto protocol that was agreed in cancun talks positively about the second commitment period in principle.
危机的“导火线”是日本于本周表态坚决反对《京都议定书》第二承诺期。
The potential crisis was provoked by Japan stating earlier this week that it would not sign up to a second period of the Kyoto Protocol.
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