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以下文字摘自一封写给森特维尔镇学校董事会的信。
The following appeared in a letter to the school board in the town of Centerville.
这封信是达尔文为感谢美国地质学家费迪南德·范德维耶·海登博士而写的。
The letter was written by Darwin to thank an American geologist, Dr. Ferdinand Vandeveer Hayden.
大约两分钟后，维姬拿着另一封信回来了。
After about two minutes, Vicky was back with another letter.
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