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Although Darwin was able to persuade much of the world that a modern eye could be produced gradually from a much simpler structure, he did not even attempt to explain how the simple light sensitive spot that was his starting point actually worked.
尽管达尔文能够说服世界上大部分人，现代眼睛可以从一个简单得多的结构中逐渐产生，但他甚至没有试图解释，作为他的出发点的那个简单的光敏点实际上是如何工作的。