如果跟踪自然指数，会得出类似结论。这几年中国科技发展实在太快了，所以怪不得美国这么紧张

来源: cn_abcd 于 2023-03-02 13:06:55 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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