摘要：
If you have an apple and I have an apple and we exchange these apples then you and I will still each have one apple. But if you have an idea and I have an idea and we exchange these ideas, then each of us will have two ideas. 阅读全文
posted @ 2009-06-19 16:26 匆匆 阅读(195) 评论(0) 推荐(0)
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