Moreover, all our knowledge of organic remains teaches us, that species have a definite existence, and a centralization in geological time as well as in geographical space, and that no species is repeated in time.
此外，我们对有机遗迹的所有知识都告诉我们，物种有明确的存在，在地质时间和地理空间上都是集中的，没有物种在时间上是重复的。
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