如何理解爱因斯坦的这句名言「 The secret to creativity is ...
01 July 2025 admin
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人类的祖先是约1600万年前的南方古猿，直立行走的人类出现在约600-400万年前，旧石器人类（大脑发展并开始使用工具）出现在约250万年前，使用火和社会行为的人类出现在约100万年前，而现代人类则出现在约30万年前。
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