Saudi Arabia estimates that OPEC, of which the kingdom is the biggest member, stands to lose at least $6 trillion in oil revenue over the next two decades if an effective Copenhagen deal takes effect.

• 作为欧佩克最大成员国的沙特阿拉伯估计，如果一份有效的哥本哈根协议生效，未来二十年欧佩克石油收入将经受至少6万亿美元的损失。