求助一个句子的理解

The key factor in the success of these countries (along with high literacy, which contributed to it) was their ability to adapt to the international division of labor determined by the early industrializers and to stake out areas of specialization in international markets for which they were especially well suited.

句子主干是The key factor was their ability, in the success of these countries (along with high literacy, which contributed to it) 修饰主语，to adapt 和 to stake out 并列修饰宾语。for which 后修饰 areas of specialization

TPO18第一篇里的，绕糊涂了.....那个and to是跟前面哪个to并列啊？

求同学详解。

谢谢~=v=



顺便请教同学们
口语时如果要说 TOEFL IBT考试，应该怎么念啊，是一个字母一个字母念么？~~ ['t?ufl] 之后按字母读

-- by 会员 aspirin415 (2010/11/2 14:46:48)