美国（如果签署《京都议定书》）就可能要承担《京都议定书》三分之二、甚至更多的成本，或许高于所有其它国家的总和。
The US would have had to bear up to two-thirds, or more, of the cost of Kyoto – probably more than all other nations combined.
著有《征服胆怯：个性化的途径》一书的心理学家乔纳森·奇克认为，在害羞的人中，有三分之二的人能确认生活中导致他们胆怯的具体事件。
According to psychologist Jonathan Cheek, author of Conquering shyness: a Personalized Approach, two-thirds of shy people can identify specific events in their lives that contributed to their shyness.
IBM发现，这一过程把准备建议书的时间减少了三分之二，把客户开发交付时间缩短了60%。
IBM found that this process reduced the time spent preparing proposals by as much as two-thirds and shortened the development of client deliverables by as much as 60%.
IBM发现，这一过程把准备建议书的时间减少了三分之二，把客户开发交付时间缩短了60%。
IBM found that this process reduced the time spent preparing proposals by as much as two-thirds and shortened the development of client deliverables by as much as 60%.
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