以下为句子列表：
英文: For his part, Darwin noted in On the Origin of Species that a bear swimming with its mouth agape to catch insects was a plausible evolutionary starting point for whales.
中文: 达尔文在《物种原始论》第一版中说道，在美洲有人观察到黑熊一面在水中游泳，一面张大嘴巴捕捉昆虫，我们可以合理地推测那是鲸豚类的演化起点。
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英文: Publication: The Origin of Species by Means of Natural Selection.
中文: 物种起源—物竞天择，1859年出版。
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