在准备演讲的过程中，胡安不停地问自己：“我怎么才能让一个对地震和地质原理一无所知的人明白这一点？”
As he prepared the speech, Juan kept asking himself, "How can I make this clear and meaningful to someone who knows nothing about earthquakes or geological principles?"
查尔斯 达尔文在读过查尔斯 ·莱尔的《地质学原理》之后，草草地在书的最后一页写道：“如果这是真的，愿理论一路走好。”
When Charles Darwin was done reading Charles Lyell's Principles of Geology, he scribbled on the last page, "if this were true[,] adios theory.
14本其他书籍，包括洪堡的《个人叙述》和莱尔的《地质学原理第一卷》。
14 other books, including Humboldt's "Personal Narrative" and Lyell's "Principles of Geology Vol. 1".
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