The reason was simple: The EU-12 – the new members admitted in 2004 – have been outperforming the EU-15. The new members have not agreed to a collective Kyoto goal, but as a group they are projected to reduce emissions relative to 1990 by around 20% by 2010.
这样做的原因很简单：欧盟12国－在2004被接纳为新成员的国家－已经比原欧盟15国做得好。新成员国没有就集体的京都议定书目标达成共识，但是作为一个群体，它们计划到2010年，比 1990年削减大约20%的排放量。