The principal differences between the two calculations are that they use different models, and made different assumptions about what countries will do after their current targets expire, said Jones.
琼斯说，这两种计算方法的主要区别在于使用不同的模型，以及对各国在当前目标过期后的行动作出的不同预测。
The principal differences between the two calculations are that they use different models, and made different assumptions about what countries will do after their current targets expire, said Jones.
琼斯说，这两种计算方法的主要区别在于使用不同的模型，以及对各国在当前目标过期后的行动作出的不同预测。
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